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description Publicationkeyboard_double_arrow_right Project milestone , Other literature type 2022Publisher:Zenodo D'Oria, Marco; Secci, Daniele; Tanda, Maria Giovanna; Todaro, Valeria; Zanini, Andrea;This Milestone, namely M3.3, is part of Task 3.3 “Downscaling of future climate projections at the case-study scale and their transfer to the Partners”. The aim of M3.3 is to outline the results of the climate change evaluation over the investigated pilot sites. For the future projections of the climate variables (precipitation and temperature), the data provided by EURO-CORDEX initiative under two emission scenarios (RCP4.5 and RCP8.5) are used. The main information on the pilot sites, available data, analyses and results are presented. The data are freely downloadable from the web repository https://doi.org/10.5281/zenodo.7247977. This project is part of the PRIMA Programme supported by the European Union's Horizon 2020 Research and Innovation Programme under Grant Agreement No 1923.
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You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5281/zenodo.7248088&type=result"></script>'); --> </script>
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visibility 7visibility views 7 download downloads 12 Powered bymore_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5281/zenodo.7248088&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Project milestone , Other literature type 2022Publisher:Zenodo D'Oria, Marco; Secci, Daniele; Tanda, Maria Giovanna; Todaro, Valeria; Zanini, Andrea;This Milestone, namely M3.3, is part of Task 3.3 “Downscaling of future climate projections at the case-study scale and their transfer to the Partners”. The aim of M3.3 is to outline the results of the climate change evaluation over the investigated pilot sites. For the future projections of the climate variables (precipitation and temperature), the data provided by EURO-CORDEX initiative under two emission scenarios (RCP4.5 and RCP8.5) are used. The main information on the pilot sites, available data, analyses and results are presented. The data are freely downloadable from the web repository https://doi.org/10.5281/zenodo.7247977. This project is part of the PRIMA Programme supported by the European Union's Horizon 2020 Research and Innovation Programme under Grant Agreement No 1923.
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5281/zenodo.7248088&type=result"></script>'); --> </script>
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visibility 7visibility views 7 download downloads 12 Powered bymore_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5281/zenodo.7248088&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Conference object 2021 ItalyPublisher:Zenodo Funded by:EC | AGROinLOGEC| AGROinLOGPari L; Alfano V; Suardi A; Bergonzoli S; Stefanoni W; Lazar S; Latterini F; Attolico C; Palmieri N; Mattei P.;This work has been developed under the AGROinLOG Project, “Demonstration of innovative integrated biomass logistics centres for the Agro-industry sector in Europe”. An Integrated Biomass Logistics Center (IBLC), is based on the introduction of new production chains into existing agro-industries by using new biomass feedstock. The AGROinLOG Project has dedicated great attention to investigate the potential of cereal chaff as a valuable resource.Chaff is the fine fraction of the thrashing residues, not usually collected. Chaff is made up of glumes, seed husks, rachis and the tinner part of the cereal stems, whole and cracked kernels, as well as weed seeds.Currently there are several mechanical solutions available on the market for chaff recovery, and others are still at prototype stage, but theyare not so common and very often unknown to the farmers.So far, the literature reportsfew cases of chaff collection with the specific purpose of weed seeds removal, but it still lacks specificexperiments on these machinesintentionally used for biomass collection.For this reason, during the Project AGROinLOG a series of large field tests were performed using an independent scientific approach with different kind of chaff harvesting technologiesin France, Sweden and Italy from 2017 to 2019.The present study collects the results of these activities with the aim to fill that gap and provide deeper understanding in the possibility to enhance the current cereal harvesting method, in order to improve the quantity of biomass collected by including the chaff. Proceedings of the 29th European Biomass Conference and Exhibition, 26-29 April 2021, Online, pp. 62-68
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5281/zenodo.5734414&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
visibility 6visibility views 6 download downloads 5 Powered bymore_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5281/zenodo.5734414&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Conference object 2021 ItalyPublisher:Zenodo Funded by:EC | AGROinLOGEC| AGROinLOGPari L; Alfano V; Suardi A; Bergonzoli S; Stefanoni W; Lazar S; Latterini F; Attolico C; Palmieri N; Mattei P.;This work has been developed under the AGROinLOG Project, “Demonstration of innovative integrated biomass logistics centres for the Agro-industry sector in Europe”. An Integrated Biomass Logistics Center (IBLC), is based on the introduction of new production chains into existing agro-industries by using new biomass feedstock. The AGROinLOG Project has dedicated great attention to investigate the potential of cereal chaff as a valuable resource.Chaff is the fine fraction of the thrashing residues, not usually collected. Chaff is made up of glumes, seed husks, rachis and the tinner part of the cereal stems, whole and cracked kernels, as well as weed seeds.Currently there are several mechanical solutions available on the market for chaff recovery, and others are still at prototype stage, but theyare not so common and very often unknown to the farmers.So far, the literature reportsfew cases of chaff collection with the specific purpose of weed seeds removal, but it still lacks specificexperiments on these machinesintentionally used for biomass collection.For this reason, during the Project AGROinLOG a series of large field tests were performed using an independent scientific approach with different kind of chaff harvesting technologiesin France, Sweden and Italy from 2017 to 2019.The present study collects the results of these activities with the aim to fill that gap and provide deeper understanding in the possibility to enhance the current cereal harvesting method, in order to improve the quantity of biomass collected by including the chaff. Proceedings of the 29th European Biomass Conference and Exhibition, 26-29 April 2021, Online, pp. 62-68
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5281/zenodo.5734414&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
visibility 6visibility views 6 download downloads 5 Powered bymore_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5281/zenodo.5734414&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2021 ItalyEvelina Volpe; Loredana Antronico; Francesca Ardizzone; Roberto Coscarelli; Stefano Luigi Gariano; Alessandro Mondini;Earth observation (EO) data are useful tools to analyse geomorphological processes, among which slow-moving landslides triggered by rainfall. EO data are also used to evaluate climate change and to assess its impact on geomorphological processes and geo-hydrological phenomena. The latter is the topic of the Project OT4Clima (Innovative Earth Observation technologies to study Climate Change and its impact on the environment) joined by CNR-IRPI within a consortium that includes other CNR institutes, universities and private companies. The OT4CLIMA project moves from the awareness that the impacts of climate change on the environment need to be better observed, understood, and modelled, especially at a regional scale, in order to put in place appropriate and effective risk mitigation strategies. Within the project, the CNR-IRPI group works on the development of rigorous methods and procedures for evaluating the impact of climate and its change on landslides, in particular on those characterized by a slow cinematic, at a regional scale. The test site is represented by four catchments located in the Basilicata region, southern Italy, namely the basins of the Bradano, Basento, Agri, and Sinni rivers. Long-term rainfall series gathered from 22 rain gauges located in the four catchments are analysed to evaluate the presence of temporal trends. To this aim, non-parametric and statistical tests are applied to the series. Historical landslide information is gathered from the analysis of the IFFI (Inventario dei Fenomeni Franosi in Italia) database, the Idrogeo platform (https://idrogeo.isprambiente.it/app/) and the AVI (Aree Vulnerate in Italia) catalogue. Only some types of landslide movements are considered, namely rotational-translational slides, slow slides/flows, complex movements. Moreover, Copernicus Sentinel-1 images are employed to detect the spatial and temporal distribution of slow earth surface deformations. The obtained results are used for checking the completeness of the landslide inventories. More in detail, the deformation maps of the test site are obtained by means of the application of the SBAS (Small BAseline Subset) technique to three datasets of Sentinel-1 images: t146 ascending orbit and t51 and t124 descending orbits, for the period 2015-2020. Then, a comparative analysis of rainfall data with displacement series is carried out with the aim of identifying clusters of satellite measurements with homogeneous behaviour likely correlated to variations in the rainfall regime. In particular, only the points with a mean velocity in the observation higher than 0.1 cm/year are considered to be moving. Moreover, only the displacement series of points located in areas mapped as landslides - as for the historical inventories - and sited within the influence regions of each rain gauge in the study area are analysed. A 10-km circular buffer centred in the stations are used to define the influence region of each station. The displacement series are analysed and compared to the rainfall series to search for correlations and to evaluate the effects of climate drivers on slow moving landslides.
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2021 ItalyEvelina Volpe; Loredana Antronico; Francesca Ardizzone; Roberto Coscarelli; Stefano Luigi Gariano; Alessandro Mondini;Earth observation (EO) data are useful tools to analyse geomorphological processes, among which slow-moving landslides triggered by rainfall. EO data are also used to evaluate climate change and to assess its impact on geomorphological processes and geo-hydrological phenomena. The latter is the topic of the Project OT4Clima (Innovative Earth Observation technologies to study Climate Change and its impact on the environment) joined by CNR-IRPI within a consortium that includes other CNR institutes, universities and private companies. The OT4CLIMA project moves from the awareness that the impacts of climate change on the environment need to be better observed, understood, and modelled, especially at a regional scale, in order to put in place appropriate and effective risk mitigation strategies. Within the project, the CNR-IRPI group works on the development of rigorous methods and procedures for evaluating the impact of climate and its change on landslides, in particular on those characterized by a slow cinematic, at a regional scale. The test site is represented by four catchments located in the Basilicata region, southern Italy, namely the basins of the Bradano, Basento, Agri, and Sinni rivers. Long-term rainfall series gathered from 22 rain gauges located in the four catchments are analysed to evaluate the presence of temporal trends. To this aim, non-parametric and statistical tests are applied to the series. Historical landslide information is gathered from the analysis of the IFFI (Inventario dei Fenomeni Franosi in Italia) database, the Idrogeo platform (https://idrogeo.isprambiente.it/app/) and the AVI (Aree Vulnerate in Italia) catalogue. Only some types of landslide movements are considered, namely rotational-translational slides, slow slides/flows, complex movements. Moreover, Copernicus Sentinel-1 images are employed to detect the spatial and temporal distribution of slow earth surface deformations. The obtained results are used for checking the completeness of the landslide inventories. More in detail, the deformation maps of the test site are obtained by means of the application of the SBAS (Small BAseline Subset) technique to three datasets of Sentinel-1 images: t146 ascending orbit and t51 and t124 descending orbits, for the period 2015-2020. Then, a comparative analysis of rainfall data with displacement series is carried out with the aim of identifying clusters of satellite measurements with homogeneous behaviour likely correlated to variations in the rainfall regime. In particular, only the points with a mean velocity in the observation higher than 0.1 cm/year are considered to be moving. Moreover, only the displacement series of points located in areas mapped as landslides - as for the historical inventories - and sited within the influence regions of each rain gauge in the study area are analysed. A 10-km circular buffer centred in the stations are used to define the influence region of each station. The displacement series are analysed and compared to the rainfall series to search for correlations and to evaluate the effects of climate drivers on slow moving landslides.
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You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu0 citations 0 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=cnr_________::20141464f97a9989fe6e40eb1e03f4a7&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 ItalyPublisher:European Journal of Social Impact and Circular Economy Funded by:EC | BIO-PLASTICS EUROPEEC| BIO-PLASTICS EUROPEAuthors: Eleonora Foschi; Selena Aureli; Angelo Paletta;handle: 11585/939603
Bio-based and biodegradable plastics (BBPs) are innovative materials, wholly or partially produced from biomass, with the potential to enhance the circulation of resources in the biological cycle of the Ellen MacArthur Foundation’s butterfly diagram. Although BBPs are generally considered more environmental-friendly than conventional plastics, robust scientific evidence is still missing. The lack of tools and metrics to assess the circularity and sustainability of the BBPs industry poses relevant challenges for its upscaling and contribution to climate neutrality goals in Europe. It calls for adopting system and life cycle thinking, guided by multi-level and multi-dimensional examinations, which led researchers to build a comprehensive picture of trends, gaps and future orientations that may boost a sustainable circular bioeconomy in the sector. The value- chain based and multi-faceted SWOT analysis that emerged from the intersection of system and corporate data reveals the need to establish a combined circular bioeconomy strategy where incentives to integrated local supply chain, dedicated EPR scheme, eco-design guidelines, revised EoL standards, new clear labelling schemes and harmonised sustainability criteria should be prioritized and conjointly pursued to accelerate the transition towards a sustainable circular bioeconomy of the BBPs value chain. European Journal of Social Impact and Circular Economy, V. 4 N. 2 (2023)
Archivio istituziona... arrow_drop_down European Journal of Social Impact and Circular EconomyArticle . 2023 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert Archivio istituziona... arrow_drop_down European Journal of Social Impact and Circular EconomyArticle . 2023 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.13135/2704-9906/7154&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 ItalyPublisher:European Journal of Social Impact and Circular Economy Funded by:EC | BIO-PLASTICS EUROPEEC| BIO-PLASTICS EUROPEAuthors: Eleonora Foschi; Selena Aureli; Angelo Paletta;handle: 11585/939603
Bio-based and biodegradable plastics (BBPs) are innovative materials, wholly or partially produced from biomass, with the potential to enhance the circulation of resources in the biological cycle of the Ellen MacArthur Foundation’s butterfly diagram. Although BBPs are generally considered more environmental-friendly than conventional plastics, robust scientific evidence is still missing. The lack of tools and metrics to assess the circularity and sustainability of the BBPs industry poses relevant challenges for its upscaling and contribution to climate neutrality goals in Europe. It calls for adopting system and life cycle thinking, guided by multi-level and multi-dimensional examinations, which led researchers to build a comprehensive picture of trends, gaps and future orientations that may boost a sustainable circular bioeconomy in the sector. The value- chain based and multi-faceted SWOT analysis that emerged from the intersection of system and corporate data reveals the need to establish a combined circular bioeconomy strategy where incentives to integrated local supply chain, dedicated EPR scheme, eco-design guidelines, revised EoL standards, new clear labelling schemes and harmonised sustainability criteria should be prioritized and conjointly pursued to accelerate the transition towards a sustainable circular bioeconomy of the BBPs value chain. European Journal of Social Impact and Circular Economy, V. 4 N. 2 (2023)
Archivio istituziona... arrow_drop_down European Journal of Social Impact and Circular EconomyArticle . 2023 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.13135/2704-9906/7154&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert Archivio istituziona... arrow_drop_down European Journal of Social Impact and Circular EconomyArticle . 2023 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.13135/2704-9906/7154&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis , Thesis 2011Embargo end date: 01 Aug 2011 Italy, GermanyPublisher:Universität Stuttgart Authors: Tahnee María; González Martínez;doi: 10.18419/opus-1909
Die Metropolregion Santiago (MRS) verzeichnete in den letzten Jahren ein großes Bevölkerungswachstum und einen Anstieg des Lebensstandards. Als Folge davon hat sich das Aufkommen von Siedlungsabfällen fast innerhalb von 10 Jahren verdoppelt. Die Daten für den aktuellen Zustand des Abfallmanagements wurden durch Feldforschungen, Fragebögen, Feldbesuche und durch eine systematische Auswertung von bereits vorliegender Literatur erhoben. Das integrative Nachhaltigkeitskonzept der Helmholtz-Gemeinschaft diente als konzeptioneller Rahmen für die Studie. Zur Bewertung des aktuellen Zustands des Abfallmanagements wurden Nachhaltigkeitsindikatoren identifiziert, deren aktuelle Werte bestimmt und Zielwerte festgelegt. Die Nachhaltigkeitsanalyse zeigt, dass die größten Defizite darin liegen, dass nahezu die gesamte Abfallmenge ohne jegliche Vorbehandlung deponiert wird. Damit verbunden sind lang andauernde Emissionen von Treibhausgasen. Um herauszufinden, wie der informelle Sektor im Abfallmanagement zur Nachhaltigkeit beiträgt, wurden veröffentlichten Erfahrungen mit informellen Müllsammlern in Lateinamerika analysiert. Dabei wurden die entsprechenden Akteure sowie etablierte Allianzen zwischen diesen Akteuren identifiziert. Schlüsselfaktoren für ein nachhaltiges Abfallmanagement unter Einbeziehung des informellen Sektors sind die Legalisierung der Schattenwirtschaft und feste Verträge mit Partnerunternehmen. Relevante Akteure für die Gestaltung der Arbeitsbedingungen des informellen Sektors sind Vertreter privater und öffentlicher Unternehmen, einzelne gesellschaftliche Gruppen sowie Vertreter von Nichtregierungsorganisationen. Schließlich wurden drei explorative Szenarien für das Bezugsjahr 2030 entwickelt: Business as Usual (BAU), Collective Responsibility (CR) und Market Individualism (MI). Das BAU-Szenario enthält eine getrennte Sammlung von Bioabfall und von Wertstoffen; hervorgerufen durch einen verstärkten Organisationsgrad der informellen Müllsammler und den Ausbau von Bring-Systemen. Die Errichtung mechanischer Sortierungsanlagen trägt zur Verwertung der Materialien und zum Recycling bei. Das entstehende Deponiegas und Biogas wird als erneuerbare Energiequelle genutzt. Das CR-Szenario enthält eine getrennte Sammlung von Bioabfall und Wertstoffen. Dies wird erreicht durch eine verstärkte Zusammenarbeit mit den jetzt organisierten Müllsammlern und durch den Ausbau von Bring-Systemen. Mechanische Sortierungsanlagen tragen zur Verwertung von Materialien und zum Recycling bei. Durch Abtrennung einer heizwertreichen Fraktion in mechanisch biologischen Anlagen werden Sekundärbrennstoffe produziert. Darüber hinaus werden, das entstehende Deponiegas sowie das in Vergärungsanlagen erzeugte Biogas energetisch genutzt. Im MI-Szenario sind Wiederverwertungsstrategien von untergeordneter Bedeutung. Es gibt kein Interesse an einer Zusammenarbeit mit den informellen Müllsammlern und keine Anreize für einen verstärkten Organisationsgrad in diesem Bereich. Deshalb bleibt die Branche weitgehend informell. Technologische Entwicklungen in diesem Szenario enthalten die mechanische Sortierung von gemischtem Abfall und die energetische Verwertung von Deponiegas. Die Ergebnisse zeigten, dass das Pro-Kopf-Aufkommen an Siedlungsabfällen im Jahr 2030 in allen Szenarien deutlich höher als im Jahr 2007 ist und der festgelegte Zielwert von 1,6 kg/Kopf/Tag nicht erreicht wurde. Den höchsten Wert (2,0 kg/Kopf/Tag) weist das MI-Szenario auf, der niedrigste Wert (1,8 kg/Kopf/Tag) wurde im CR-Szenario gefunden. Eine Vorbehandlung der gesammelten gemischten Siedlungsabfälle findet nur im CR-Szenario statt, der entsprechende Wert beträgt 18 %, der Zielwert wird damit nicht erreicht. Die höchsten Treibhausgasemissionen treten im MI-Szenario (295 kg CO2-eq/Kopf/Jahr) auf, den niedrigsten Wert (155 kg CO2-eq/Kopf/Jahr) findet man im CR-Szenario. All diese Werte sind, verglichen mit dem festgelegten Zielwert von 71 kg/Kopf/Jahr, deutlich zu hoch. Der Zielwert für die Wiederverwertungsquote wurde im CR-Szenario erreicht (43 %), den niedrigsten Wert zeigt das MI-Szenario (20 %). Die Zielwerte für das Einkommen der Müllsammler wurden im CR-Szenario erreicht (128 %). Im MI-Szenario beträgt dieser Wert lediglich 51 %. Die Kosten für das Abfallmanagement im Verhältnis zum Bruttoinlandsprodukt sinken in den drei Szenarien. Aus den Ergebnissen lässt sich ableiten, dass ein Einbeziehen von mehreren Faktoren erforderlich ist, um die Nachhaltigkeit des Abfallmanagementsystems in den drei Szenarien zu steigern und dass es von wesentlicher Bedeutung ist, schon vorhandene und gut funktionierende Subsysteme, wie das der informellen Müllsammler, zu nutzen und zu stärken. Ebenso ist die Umsetzung robuster Behandlungstechnologien, die einen Beitrag zur Reduktion negativer Umweltauswirkungen leisten, zu forcieren. Diese Technologien sollten preiswert sein, um ihren Einsatz auch unter wirtschaftlich vertretbaren Gesichtspunkten zu ermöglichen. The Metropolitan Region of Santiago (MRS) has experienced a large growth in population in recent years and a rise in the standard of living. Therefore, its municipal solid waste (MSW) has almost doubled in 10 years. Data about the current situation of MSW management in MRS were collected during field research, interviews, field visits and by a systematic evaluation of existing documentary literature. The Integrative Sustainability Concept of the Helmholtz Association provided a conceptual framework for the study. The sustainability analysis showed that the largest deficits are in the current amount of MSW deposited at sanitary landfills without any pre-treatment, and the emission values of greenhouse gases associated with waste treatment and final disposal. To find out if and how the informal waste sector contributes to sustainability, experiences of organization of informal primary collectors in Latin America were analyzed. The key factors which have an influence on their working conditions were identified. These factors include the existence of a legal framework for the informal waste sector; the existence of alliances with production companies guaranteeing a reliable industrial market for secondary raw materials and expansion of activities beyond collection of recyclables. Key stakeholders included people from the public and the private sector, from the civil society and from NGOs. Three explorative scenarios were developed for the year 2030: Business as Usual (BAU), Collective Responsibility (CR), and Market Individualism (MI). Waste generation, waste composition and different practices of waste collection, recovery and treatment were taken into account for the scenarios formulation. The BAU scenario incorporated separate collection of biowaste, recyclable materials with some participation of organized primary collectors and an expansion of drop-off systems. The mechanical sorting of mixed waste was introduced. The utilization of landfill gas as an energy source was promoted and the production of biogas in anaerobic digestion plants was implemented. The CR scenario incorporated separate collection of biowaste, commitment to work together with the primary waste collectors and an expansion of drop-off systems. The mechanical and mechanical biological treatment of mixed waste was introduced. The utilization of landfill gas as an energy source is promoted and the production of biogas in anaerobic digestion plants was implemented. In the MI separate collection of biowaste and recyclable materials was irrelevant. An organization of the informal primary collectors did not take place. Mechanical sorting of mixed waste was introduced. Utilization of landfill gas as an energy source was promoted. The results showed that the generation flux of MSW is at least 50% larger in all scenarios in 2030 compared to the year 2007, exceeding the limit value proposed. The highest value (2.0 kg/(person•day) is obtained in the MI scenario, and the lowest (1.8 kg/(person•day)) in the CR scenario. Pre-treatment of mixed MSW collected is only achieved in the CR scenario with a value of 18%, however, the target value is not achieved. The highest greenhouse gas emission value is obtained in the MI scenario with 295 kg CO2eq/(person•year), the lowest value of 155 kg CO2-eq/(person•year) is obtained in the CR scenario; a value that is still very high in comparison with the suggested target. The largest recycling rate is obtained in the CR scenario (43%), which is better than the target value proposed, the lowest recycling rate is obtained in the MI scenario (20%). The income of primary collectors in comparison with the income of one individual household is improved significantly in the CR scenario (128%), in the MI scenario, earnings of primary collectors decreased to 51%. The share of GDP spent on MSW management is lower in 2030, compared to the year 2007, in all scenarios the largest value of 0.17% is obtained in the CR scenario, and the lowest value of 0.14% is obtained in the MI scenario. The results of the evaluation of the scenarios showed that the largest sustainability deficits are the amount of mixed MSW which undergoes pre-treatment, the greenhouse gas emissions associated to MSW treatment and disposal, as well as the share of GDP spent on MSW management. The results obtained suggested that an integration of several factors is required to increase sustainability. It is essential to strengthen and take advantage of the subsystems which are working within the waste management system, as in the case of the informal sector. In addition to the implementation of flexible treatment technologies which help to decrease negative environmental impacts. Moreover, the costs of these technologies should be affordable, allowing a better financial management.
Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2011Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen 2 citations 2 popularity Average influence Average impulse Average Powered by BIP!
more_vert Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2011Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis , Thesis 2011Embargo end date: 01 Aug 2011 Italy, GermanyPublisher:Universität Stuttgart Authors: Tahnee María; González Martínez;doi: 10.18419/opus-1909
Die Metropolregion Santiago (MRS) verzeichnete in den letzten Jahren ein großes Bevölkerungswachstum und einen Anstieg des Lebensstandards. Als Folge davon hat sich das Aufkommen von Siedlungsabfällen fast innerhalb von 10 Jahren verdoppelt. Die Daten für den aktuellen Zustand des Abfallmanagements wurden durch Feldforschungen, Fragebögen, Feldbesuche und durch eine systematische Auswertung von bereits vorliegender Literatur erhoben. Das integrative Nachhaltigkeitskonzept der Helmholtz-Gemeinschaft diente als konzeptioneller Rahmen für die Studie. Zur Bewertung des aktuellen Zustands des Abfallmanagements wurden Nachhaltigkeitsindikatoren identifiziert, deren aktuelle Werte bestimmt und Zielwerte festgelegt. Die Nachhaltigkeitsanalyse zeigt, dass die größten Defizite darin liegen, dass nahezu die gesamte Abfallmenge ohne jegliche Vorbehandlung deponiert wird. Damit verbunden sind lang andauernde Emissionen von Treibhausgasen. Um herauszufinden, wie der informelle Sektor im Abfallmanagement zur Nachhaltigkeit beiträgt, wurden veröffentlichten Erfahrungen mit informellen Müllsammlern in Lateinamerika analysiert. Dabei wurden die entsprechenden Akteure sowie etablierte Allianzen zwischen diesen Akteuren identifiziert. Schlüsselfaktoren für ein nachhaltiges Abfallmanagement unter Einbeziehung des informellen Sektors sind die Legalisierung der Schattenwirtschaft und feste Verträge mit Partnerunternehmen. Relevante Akteure für die Gestaltung der Arbeitsbedingungen des informellen Sektors sind Vertreter privater und öffentlicher Unternehmen, einzelne gesellschaftliche Gruppen sowie Vertreter von Nichtregierungsorganisationen. Schließlich wurden drei explorative Szenarien für das Bezugsjahr 2030 entwickelt: Business as Usual (BAU), Collective Responsibility (CR) und Market Individualism (MI). Das BAU-Szenario enthält eine getrennte Sammlung von Bioabfall und von Wertstoffen; hervorgerufen durch einen verstärkten Organisationsgrad der informellen Müllsammler und den Ausbau von Bring-Systemen. Die Errichtung mechanischer Sortierungsanlagen trägt zur Verwertung der Materialien und zum Recycling bei. Das entstehende Deponiegas und Biogas wird als erneuerbare Energiequelle genutzt. Das CR-Szenario enthält eine getrennte Sammlung von Bioabfall und Wertstoffen. Dies wird erreicht durch eine verstärkte Zusammenarbeit mit den jetzt organisierten Müllsammlern und durch den Ausbau von Bring-Systemen. Mechanische Sortierungsanlagen tragen zur Verwertung von Materialien und zum Recycling bei. Durch Abtrennung einer heizwertreichen Fraktion in mechanisch biologischen Anlagen werden Sekundärbrennstoffe produziert. Darüber hinaus werden, das entstehende Deponiegas sowie das in Vergärungsanlagen erzeugte Biogas energetisch genutzt. Im MI-Szenario sind Wiederverwertungsstrategien von untergeordneter Bedeutung. Es gibt kein Interesse an einer Zusammenarbeit mit den informellen Müllsammlern und keine Anreize für einen verstärkten Organisationsgrad in diesem Bereich. Deshalb bleibt die Branche weitgehend informell. Technologische Entwicklungen in diesem Szenario enthalten die mechanische Sortierung von gemischtem Abfall und die energetische Verwertung von Deponiegas. Die Ergebnisse zeigten, dass das Pro-Kopf-Aufkommen an Siedlungsabfällen im Jahr 2030 in allen Szenarien deutlich höher als im Jahr 2007 ist und der festgelegte Zielwert von 1,6 kg/Kopf/Tag nicht erreicht wurde. Den höchsten Wert (2,0 kg/Kopf/Tag) weist das MI-Szenario auf, der niedrigste Wert (1,8 kg/Kopf/Tag) wurde im CR-Szenario gefunden. Eine Vorbehandlung der gesammelten gemischten Siedlungsabfälle findet nur im CR-Szenario statt, der entsprechende Wert beträgt 18 %, der Zielwert wird damit nicht erreicht. Die höchsten Treibhausgasemissionen treten im MI-Szenario (295 kg CO2-eq/Kopf/Jahr) auf, den niedrigsten Wert (155 kg CO2-eq/Kopf/Jahr) findet man im CR-Szenario. All diese Werte sind, verglichen mit dem festgelegten Zielwert von 71 kg/Kopf/Jahr, deutlich zu hoch. Der Zielwert für die Wiederverwertungsquote wurde im CR-Szenario erreicht (43 %), den niedrigsten Wert zeigt das MI-Szenario (20 %). Die Zielwerte für das Einkommen der Müllsammler wurden im CR-Szenario erreicht (128 %). Im MI-Szenario beträgt dieser Wert lediglich 51 %. Die Kosten für das Abfallmanagement im Verhältnis zum Bruttoinlandsprodukt sinken in den drei Szenarien. Aus den Ergebnissen lässt sich ableiten, dass ein Einbeziehen von mehreren Faktoren erforderlich ist, um die Nachhaltigkeit des Abfallmanagementsystems in den drei Szenarien zu steigern und dass es von wesentlicher Bedeutung ist, schon vorhandene und gut funktionierende Subsysteme, wie das der informellen Müllsammler, zu nutzen und zu stärken. Ebenso ist die Umsetzung robuster Behandlungstechnologien, die einen Beitrag zur Reduktion negativer Umweltauswirkungen leisten, zu forcieren. Diese Technologien sollten preiswert sein, um ihren Einsatz auch unter wirtschaftlich vertretbaren Gesichtspunkten zu ermöglichen. The Metropolitan Region of Santiago (MRS) has experienced a large growth in population in recent years and a rise in the standard of living. Therefore, its municipal solid waste (MSW) has almost doubled in 10 years. Data about the current situation of MSW management in MRS were collected during field research, interviews, field visits and by a systematic evaluation of existing documentary literature. The Integrative Sustainability Concept of the Helmholtz Association provided a conceptual framework for the study. The sustainability analysis showed that the largest deficits are in the current amount of MSW deposited at sanitary landfills without any pre-treatment, and the emission values of greenhouse gases associated with waste treatment and final disposal. To find out if and how the informal waste sector contributes to sustainability, experiences of organization of informal primary collectors in Latin America were analyzed. The key factors which have an influence on their working conditions were identified. These factors include the existence of a legal framework for the informal waste sector; the existence of alliances with production companies guaranteeing a reliable industrial market for secondary raw materials and expansion of activities beyond collection of recyclables. Key stakeholders included people from the public and the private sector, from the civil society and from NGOs. Three explorative scenarios were developed for the year 2030: Business as Usual (BAU), Collective Responsibility (CR), and Market Individualism (MI). Waste generation, waste composition and different practices of waste collection, recovery and treatment were taken into account for the scenarios formulation. The BAU scenario incorporated separate collection of biowaste, recyclable materials with some participation of organized primary collectors and an expansion of drop-off systems. The mechanical sorting of mixed waste was introduced. The utilization of landfill gas as an energy source was promoted and the production of biogas in anaerobic digestion plants was implemented. The CR scenario incorporated separate collection of biowaste, commitment to work together with the primary waste collectors and an expansion of drop-off systems. The mechanical and mechanical biological treatment of mixed waste was introduced. The utilization of landfill gas as an energy source is promoted and the production of biogas in anaerobic digestion plants was implemented. In the MI separate collection of biowaste and recyclable materials was irrelevant. An organization of the informal primary collectors did not take place. Mechanical sorting of mixed waste was introduced. Utilization of landfill gas as an energy source was promoted. The results showed that the generation flux of MSW is at least 50% larger in all scenarios in 2030 compared to the year 2007, exceeding the limit value proposed. The highest value (2.0 kg/(person•day) is obtained in the MI scenario, and the lowest (1.8 kg/(person•day)) in the CR scenario. Pre-treatment of mixed MSW collected is only achieved in the CR scenario with a value of 18%, however, the target value is not achieved. The highest greenhouse gas emission value is obtained in the MI scenario with 295 kg CO2eq/(person•year), the lowest value of 155 kg CO2-eq/(person•year) is obtained in the CR scenario; a value that is still very high in comparison with the suggested target. The largest recycling rate is obtained in the CR scenario (43%), which is better than the target value proposed, the lowest recycling rate is obtained in the MI scenario (20%). The income of primary collectors in comparison with the income of one individual household is improved significantly in the CR scenario (128%), in the MI scenario, earnings of primary collectors decreased to 51%. The share of GDP spent on MSW management is lower in 2030, compared to the year 2007, in all scenarios the largest value of 0.17% is obtained in the CR scenario, and the lowest value of 0.14% is obtained in the MI scenario. The results of the evaluation of the scenarios showed that the largest sustainability deficits are the amount of mixed MSW which undergoes pre-treatment, the greenhouse gas emissions associated to MSW treatment and disposal, as well as the share of GDP spent on MSW management. The results obtained suggested that an integration of several factors is required to increase sustainability. It is essential to strengthen and take advantage of the subsystems which are working within the waste management system, as in the case of the informal sector. In addition to the implementation of flexible treatment technologies which help to decrease negative environmental impacts. Moreover, the costs of these technologies should be affordable, allowing a better financial management.
Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2011Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen 2 citations 2 popularity Average influence Average impulse Average Powered by BIP!
more_vert Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2011Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.18419/opus-1909&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object , Other literature type 2011 ItalyPublisher:ETA-Florence Renewable Energies Authors: DELL'ANTONIA, Daniele; GUBIANI, Rino; PERGHER, Gianfranco;handle: 11390/1041808
The importance of emission control has increased sharply due to increased need of energy from combustion. However, biomass utilization in energy production is not free from problems because of physical and chemical characteristics which are substantially different from conventional energy sources. In this situation, the quantity and quality of emissions as well as used renewable source as wood or corn grain are often unknown. To assess this problem the paper addresses the objectives to quantify the amount of greenhouse gases during the combustion of corn as compared to the emissions in fossil combustion (natural gas, LPG and diesel boiler). The test was carried out in Friuli Venezia Giulia in 2006-2008 to determine the air pollution (CO, NO, NO2, NOx, SO2 and CO2) from fuel combustion in the family boilers with power between 20-30 kWt. The flue gas emission was measured with a professional semi-continuous multi-gas analyzer, (Vario plus industrial, MRU air Neckarsulm-Obereisesheim). Data showed a lower emission of fossil fuel compared to corn in family boilers in reference to pollutants in the flue gas (NOx, SO2 and CO). In particular way the biomass combustion make a higher concentration of carbon monoxide (for a incomplete combustion because there aren’t a good mixing between fuel and air) and nitrogen oxides (in relation at higher content of nitrogen in herbaceous biomass in comparison of another fuel). Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 1296-1304
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5071/19theubce2011-vp2.1.30&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu2 citations 2 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5071/19theubce2011-vp2.1.30&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object , Other literature type 2011 ItalyPublisher:ETA-Florence Renewable Energies Authors: DELL'ANTONIA, Daniele; GUBIANI, Rino; PERGHER, Gianfranco;handle: 11390/1041808
The importance of emission control has increased sharply due to increased need of energy from combustion. However, biomass utilization in energy production is not free from problems because of physical and chemical characteristics which are substantially different from conventional energy sources. In this situation, the quantity and quality of emissions as well as used renewable source as wood or corn grain are often unknown. To assess this problem the paper addresses the objectives to quantify the amount of greenhouse gases during the combustion of corn as compared to the emissions in fossil combustion (natural gas, LPG and diesel boiler). The test was carried out in Friuli Venezia Giulia in 2006-2008 to determine the air pollution (CO, NO, NO2, NOx, SO2 and CO2) from fuel combustion in the family boilers with power between 20-30 kWt. The flue gas emission was measured with a professional semi-continuous multi-gas analyzer, (Vario plus industrial, MRU air Neckarsulm-Obereisesheim). Data showed a lower emission of fossil fuel compared to corn in family boilers in reference to pollutants in the flue gas (NOx, SO2 and CO). In particular way the biomass combustion make a higher concentration of carbon monoxide (for a incomplete combustion because there aren’t a good mixing between fuel and air) and nitrogen oxides (in relation at higher content of nitrogen in herbaceous biomass in comparison of another fuel). Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 1296-1304
add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.5071/19theubce2011-vp2.1.30&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu2 citations 2 popularity Average influence Average impulse Average Powered by BIP!
more_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Book 2021 ItalyPublisher:Universit� degli Studi di Bergamo Authors: COFFETTI, Denny;The main challenge for concrete industry - and in general for construction materials - is to serve the two major needs of human society, the protection of the environment, on one hand, and the requirements of buildings and infrastructures by the world?s growing population, on the other. In the past concrete industry has satisfied these needs well. However, for a variety of reasons, the situation has changed dramatically in the last years. First of all, the concrete industry is the largest consumer of natural resources. Secondly, Portland cement, the binder of modern concrete mixtures, is not as environmentally friendly. The world's cement production, in fact, contributes to the earth's atmosphere about 7% of the total CO2 emissions, CO2 being one of the primary greenhouse gas (GHG) responsible for global warming and climate change. As a consequence, concrete industry in the future has to face two antithetically needs. In other words, how the concrete industry can feed the growing population needs being - at the same time - sustainable? The answer to this question is represented by the ?3R-Green Strategy? widely discussed in the first chapter of this PhD thesis: Reduction in consumption of gross energy for construction materials production, Reduction in polluting emissions and Reduction in consuming not renewable natural resources. In particular, this thesis is focused on the alternative binders to Portland cement such as alkali-activated slag cements and calcium sulphoaluminate cement-based binders in order to manufacture sustainable mixtures for special applications such as repair mortars, lightweight reinforced plasters and concretes for slabs on ground. The experimental results show the feasibility of manufacturing both EN 1504-3 R3 class mortars and Portland-free concretes for jointless slabs on ground with calcium sulphoaluminate cement, supplementary cementitious materials (fly ash, ground granulated blast furnace slag) and hydrated lime instead of Portland cement. Moreover, alkali-activated mortars and concretes seem to be a reasonable alternative to natural hydraulic lime-based and/or traditional Portland cement-based mixtures for rehabilitation or restoration of ancient masonry buildings and existing concretes structures. Finally, a new sustainability index was developed taking into account the environmental impact, the performances and the durability of mixtures. In particular, in the environmental impact section, the natural raw materials consumption, the greenhouse gas emissions and the energy consumption have been considered. Furthermore, depending on the applications and the environments, design parameters and properties related to durability have been assigned to each mixture. less
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Book 2021 ItalyPublisher:Universit� degli Studi di Bergamo Authors: COFFETTI, Denny;The main challenge for concrete industry - and in general for construction materials - is to serve the two major needs of human society, the protection of the environment, on one hand, and the requirements of buildings and infrastructures by the world?s growing population, on the other. In the past concrete industry has satisfied these needs well. However, for a variety of reasons, the situation has changed dramatically in the last years. First of all, the concrete industry is the largest consumer of natural resources. Secondly, Portland cement, the binder of modern concrete mixtures, is not as environmentally friendly. The world's cement production, in fact, contributes to the earth's atmosphere about 7% of the total CO2 emissions, CO2 being one of the primary greenhouse gas (GHG) responsible for global warming and climate change. As a consequence, concrete industry in the future has to face two antithetically needs. In other words, how the concrete industry can feed the growing population needs being - at the same time - sustainable? The answer to this question is represented by the ?3R-Green Strategy? widely discussed in the first chapter of this PhD thesis: Reduction in consumption of gross energy for construction materials production, Reduction in polluting emissions and Reduction in consuming not renewable natural resources. In particular, this thesis is focused on the alternative binders to Portland cement such as alkali-activated slag cements and calcium sulphoaluminate cement-based binders in order to manufacture sustainable mixtures for special applications such as repair mortars, lightweight reinforced plasters and concretes for slabs on ground. The experimental results show the feasibility of manufacturing both EN 1504-3 R3 class mortars and Portland-free concretes for jointless slabs on ground with calcium sulphoaluminate cement, supplementary cementitious materials (fly ash, ground granulated blast furnace slag) and hydrated lime instead of Portland cement. Moreover, alkali-activated mortars and concretes seem to be a reasonable alternative to natural hydraulic lime-based and/or traditional Portland cement-based mixtures for rehabilitation or restoration of ancient masonry buildings and existing concretes structures. Finally, a new sustainability index was developed taking into account the environmental impact, the performances and the durability of mixtures. In particular, in the environmental impact section, the natural raw materials consumption, the greenhouse gas emissions and the energy consumption have been considered. Furthermore, depending on the applications and the environments, design parameters and properties related to durability have been assigned to each mixture. less
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Preprint 2009Publisher:Unknown Wagner, Klaus; Neuwirth, Julia; Janetschek, Hubert; Wagner, Klaus; Neuwirth, Julia; Janetschek, Hubert;Recent extreme weather events have resulted in an ongoing discussion on the issues of land use and compensation payments within Austrian agriculture. Building on a functional evaluation system for agricultural lands as developed within the Interreg IIIB project “ILUP”, the national project “Agriculture and Flooding” has as its goal to classify the flood-protection contribution and flood sensitivity of agricultural lands. This, in turn, enables the recommendation of targeted measures for potentially improving flood situations, as well as an estimate of their implementation costs. In addition to the digital soil map, other fundamental sources used for the project are the digital flood risk map, IACS land-use data and works by the Institute for Land and Water Management Research. Reference values and marginal returns sourced from the Federal Institute of Agricultural Economics also flow into the cost estimates for the recommended combination. The results will contribute to an understanding of the multifunctionality of agricultural lands and to the setting of priorities on a regional scale regarding packaged flood-prevention and damage-minimization. However, the results at hand can only serve as one step toward regional flood protection projects, whose development will require the cooperation of all interest groups.
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For further information contact us at helpdesk@openaire.eu1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Preprint 2009Publisher:Unknown Wagner, Klaus; Neuwirth, Julia; Janetschek, Hubert; Wagner, Klaus; Neuwirth, Julia; Janetschek, Hubert;Recent extreme weather events have resulted in an ongoing discussion on the issues of land use and compensation payments within Austrian agriculture. Building on a functional evaluation system for agricultural lands as developed within the Interreg IIIB project “ILUP”, the national project “Agriculture and Flooding” has as its goal to classify the flood-protection contribution and flood sensitivity of agricultural lands. This, in turn, enables the recommendation of targeted measures for potentially improving flood situations, as well as an estimate of their implementation costs. In addition to the digital soil map, other fundamental sources used for the project are the digital flood risk map, IACS land-use data and works by the Institute for Land and Water Management Research. Reference values and marginal returns sourced from the Federal Institute of Agricultural Economics also flow into the cost estimates for the recommended combination. The results will contribute to an understanding of the multifunctionality of agricultural lands and to the setting of priorities on a regional scale regarding packaged flood-prevention and damage-minimization. However, the results at hand can only serve as one step toward regional flood protection projects, whose development will require the cooperation of all interest groups.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object , Other literature type 2010 ItalyPublisher:ETA-Florence Renewable Energies Authors: BIAGINI, ENRICO; M. FALCITELLI; TOGNOTTI, LEONARDO;handle: 11568/136384
The devolatilization of solid fuels is of crucial importance for all thermochemical processes and is the basic step in gasification and combustion models. Here a structural model is developed to provide an Advanced tool for Biomass and Coal Devolatilization (ABCD model), even in blend. The main features are founded on the original approach of the CPD (Chemical Percolation Devolatilization) model by Fletcher [1]. The ABCD model extends the approach also to biomass fuels. Further improvements of the ABCD model are: (i) a population balance between nmers in liquid metaplast; (ii) elemental balance closure with the speciation of light gases, heterospecies and tar composition; (iii) introduction of secondary reactions of tarcracking and crosslinking. The ABCD model results agree with a selection of experimental data (from homemade and literature works) on different biomasses. The results reported in this paper encouraged IFRF in continuing the experimental campaign for the validation of the model by extending the Solid Fuel DataBase SFDB. The inclusion of ABCD in comprehensive codes (e.g., Reactor Network Analysis, RNA [2]) and process models is valuable because it gives detailed distribution of pyrolysis products in a wide range of conditions with a low computational cost. Proceedings of the 18th European Biomass Conference and Exhibition, 3-7 May 2010, Lyon, France, pp. 923-930
Archivio della Ricer... arrow_drop_down Archivio della Ricerca - Università di PisaConference object . 2010Data sources: Archivio della Ricerca - Università di Pisaadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert Archivio della Ricer... arrow_drop_down Archivio della Ricerca - Università di PisaConference object . 2010Data sources: Archivio della Ricerca - Università di Pisaadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object , Other literature type 2010 ItalyPublisher:ETA-Florence Renewable Energies Authors: BIAGINI, ENRICO; M. FALCITELLI; TOGNOTTI, LEONARDO;handle: 11568/136384
The devolatilization of solid fuels is of crucial importance for all thermochemical processes and is the basic step in gasification and combustion models. Here a structural model is developed to provide an Advanced tool for Biomass and Coal Devolatilization (ABCD model), even in blend. The main features are founded on the original approach of the CPD (Chemical Percolation Devolatilization) model by Fletcher [1]. The ABCD model extends the approach also to biomass fuels. Further improvements of the ABCD model are: (i) a population balance between nmers in liquid metaplast; (ii) elemental balance closure with the speciation of light gases, heterospecies and tar composition; (iii) introduction of secondary reactions of tarcracking and crosslinking. The ABCD model results agree with a selection of experimental data (from homemade and literature works) on different biomasses. The results reported in this paper encouraged IFRF in continuing the experimental campaign for the validation of the model by extending the Solid Fuel DataBase SFDB. The inclusion of ABCD in comprehensive codes (e.g., Reactor Network Analysis, RNA [2]) and process models is valuable because it gives detailed distribution of pyrolysis products in a wide range of conditions with a low computational cost. Proceedings of the 18th European Biomass Conference and Exhibition, 3-7 May 2010, Lyon, France, pp. 923-930
Archivio della Ricer... arrow_drop_down Archivio della Ricerca - Università di PisaConference object . 2010Data sources: Archivio della Ricerca - Università di Pisaadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert Archivio della Ricer... arrow_drop_down Archivio della Ricerca - Università di PisaConference object . 2010Data sources: Archivio della Ricerca - Università di Pisaadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis , Thesis 2007Embargo end date: 14 Jun 2007 ItalyPublisher:Universität Stuttgart Authors: Hartmann, Gabriele Maria;doi: 10.18419/opus-260
Der prognostizierte Klimawandel wird auch den Wasserkreislauf beeinflussen. Das Ausmaß dieser Änderung frühzeitig zu bestimmen ist eine wichtige Aufgabe, da sie Grundlage notwendiger Entscheidungen ist. Dieses Ausmaß hängt allerdings stark von der Datenlage und den Methoden ab, mit denen an diese Aufgabe herangegangen wird. Selbst wenn die derzeit verwendeten Methoden stimmige Ergebnisse für den gegenwärtigen Klimazustand liefern, kann nicht davon ausgegangen werden, dass die mit diesen Methoden berechneten Ergebnisse auch für ein geändertes Klima Gültigkeit haben werden. Die Unsicherheiten der Vorhersagen sind teils meteorologischer, teils hydrologischer Herkunft. Während die Unsicherheiten der GCMs bereits bekannt und in der Diskussion sind, wurden die in diesem Kontext existierenden Probleme der hydrologischen Modelle bisher nur selten untersucht. Insbesondere die Unsicherheit in der Prozessbeschreibung innerhalb der hydrologischen Modelle muss genauer geprüft werden. In dieser Dissertation wurden verschiedene Beschreibungen des Evapotranspirationsprozesses (ET) untersucht, denn dieser Prozess wird durch den Klimawandel stark beeinflusst werden. Neun verschiedene ET-Modelle wurden ausgewählt und getestet. Anhand einer einfachen theoretischen Untersuchung zeigte sich, dass die ET-Modelle bereits auf eine geringfügige Änderung von nur einer Eingangsvariablen sehr unterschiedlich reagieren. Fraglich ist nun, wie sich die durch diese Modelle berechnete ET verändert, wenn die gesamten durch den Klimawandel hervorgerufenen Änderungen der Eingangsgrößen berücksichtigt werden. Dazu wurde ein auf dem HBV-Konzept basierendes räumlich verteiltes hydrologisches Modell aufgestellt und mit den aus den verschiedenen ET-Modellen resultierenden Ergebnissen als Input nacheinander gespeist. Die Modellierung wurde auf das Einzugsgebiet des Oberen Neckars (ca. 4000 km2) angewandt. Das Einzugsgebiet wurde in 13 Teileinzugsgebiete mit deutlichen Unterschieden eingeteilt. Die verschiedenen ET-Modelle wurden getestet, indem das hydrologische Modell auf klimatisch verschiedene Jahre geeicht und dann auf klimatisch entgegengesetzte Jahre ausgewertet wurde. Dazu wurden verschiedene Zeitreihen mit jeweils 10 klimatisch ähnlichen Jahren (10 kalte, 10 warme, 10 nasse und 10 trockene Jahre aus der Zeitreihe 1961-1990) zusammengestellt. Das hydrologische Modell wurde auf jeweils eine dieser Zeitreihen geeicht und anschließend folgendermaßen validiert. Im ersten Schritt wurde das Modell für dieselbe Zeitreihe ausgewertet, die auch für die Eichung verwendet worden war. Danach erfolgte die Auswertung auf die klimatisch entgegengesetzte Zeitreihe, beispielsweise wurde das Modell, dass auf die kalten Jahre geeicht worden war, nun hinsichtlich der erzielten Ergebnisse für die warmen Jahre untersucht. Eine geringe Abweichung der beiden Ergebnisse bedeutet eine gute Übertragbarkeit des Modells. Indem das Modell auch auf die kontinuierliche Zeitreihe 1991–2000 angewandt wurde, wurde die Übertragbarkeit zusätzlich getestet. Die Kalibrierung eines hydrologischen Modells, das den Einfluss eines Klimawandels bestimmen soll, stellt eine besondere Herausforderung dar - nicht nur bei der Auswahl von geeigneten Perioden für die Kalibrierung und die Validierung, sondern auch bei der Aufstellung einer geeigneten Zielfunktion. Eine gängige Zielfunktion ist die Nash-Sutcliffe-Effizienz. Die Güte des Modells wird dabei durch den Vergleich berechneter Werte mit beobachteten Werten ermittelt. Dieser Vergleich wird meist anhand von Tageswerten durchgeführt, was zu unerkannten systematischen Fehlern führen kann. In dem hier gewählten Ansatz wird ein auf Simulated-Annealing basierender Optimierungsalgorithmus vorgestellt, der zur Kalibrierung nicht nur Tageswerte, sondern zusätzlich auch Jahres- und Extremwerte in unterschiedlichen Kombinationen verwendet. Welche Kalibrierung sich am besten zur Bestimmung der Auswirkungen von Klimaänderungen eignet, wurde durch einen umfangreichen Vergleich der Ergebnisse festgestellt. Auch dabei wurden wieder unterschiedliche Zeitskalen verwendet: die Ergebnisse wurden nicht nur auf Tagesbasis ausgewertet, sondern auch zu Wochen, Monaten, Jahreszeiten, Halbjahren und ganzen Jahren aggregiert. Die Ergebnisse zeigen, dass einige der ET-Modelle, die unter den gegenwärtigen Klimabedingungen realistische Werte berechnen, dies bei geänderten Klimabedingungen nicht mehr vermögen. Weiterhin hat sich gezeigt, dass eine nur auf Tageswerten basierende Kalibrierung zu unzureichenden Ergebnissen bei der Übertragung der Modelle zwischen klimatisch unterschiedlich ausgeprägten Zeitreihen führt. Der Einsatz einer Zielfunktion, die sowohl Tageswerte als auch Jahresaggregationen der Tageswerte berücksichtigt, hat sich hingegen bewährt. Climate change (CC) will impact water resources. Assessing the extent of these impacts in due time is an important task, as it forms the basis for decision making. Unfortunately, the extent of this forecasted impact depends very much on data and tools used for this task. Although such methods might work well with present climatic conditions, it has to be doubted whether their results can still be relied upon in a changed climate. The uncertainties in the forecasts are partly of meteorological and partly of hydrological origin. Whereas the uncertainties of GCMs are well known and often discussed, the problems of hydrological models in this context are seldom investigated. In particular the uncertainty in process representation within the hydrological models must be revised. This dissertation focuses on the representation of the evapotranspiration (ET) process, because this process will be strongly influenced by CC. For this purpose, the suitability of nine different ET models was investigated. In a theoretical investigation, the sensitivity of the ET models to only a small change in temperature was found to be very different. Thus the question had to be raised as to how the resulting ET from these models will change with the entire predicted CC. Therefore a spatially distributed hydrological model based on the HBV concept was set up and the results of the different ET models were used consecutively as input to the hydrological model. The modelling was applied on the Upper Neckar catchment, a mesoscale river in southwestern Germany with a basin size of about 4,000 km2. This catchment was divided into 13 subcatchments with different subcatchment characteristics. The suitability of the different ET approaches was checked by calibrating the hydrological model on different climatic periods and then applying the model on other climatic periods. Thus, different 10-year periods with different climatic conditions were compiled: 10 cold, 10 warm, 10 wet and 10 dry years from the time series 1961–1990 were collected. The first step was to adapt the model to the same period it was calibrated to. Then the model was applied to other 10 years, i.e. the model calibrated on for example, the cold years was used on the warm years. The transferability was also checked by applying the models on the period 1991–2000. For the investigation of the impact of CC, the calibration of the model must meet special requirements. Apart from the selection of proper periods for calibration and validation, this also concerns the establishment of a suitable objective function. Such a function is the Nash Sutcliffe efficiency. Usually it is calculated comparing observed and modelled daily values. In this study it is shown that problems in the transfer from one climatic condition to the other cannot be detected on the base of daily values. Therefore parameter sets were optimized by an automatic calibration procedure based on Simulated Annealing, which considered the model performance on different time scales simultaneously (days up to years). As the results show, some of the ET models, which work well under stationary conditions, are not able to reproduce changes in a realistic manner. The results also show that calibrating a hydrological model that is supposed to handle short as well as long term signals becomes an important task; the objective function especially has to be chosen very carefully.
Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2007Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2007Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis , Thesis 2007Embargo end date: 14 Jun 2007 ItalyPublisher:Universität Stuttgart Authors: Hartmann, Gabriele Maria;doi: 10.18419/opus-260
Der prognostizierte Klimawandel wird auch den Wasserkreislauf beeinflussen. Das Ausmaß dieser Änderung frühzeitig zu bestimmen ist eine wichtige Aufgabe, da sie Grundlage notwendiger Entscheidungen ist. Dieses Ausmaß hängt allerdings stark von der Datenlage und den Methoden ab, mit denen an diese Aufgabe herangegangen wird. Selbst wenn die derzeit verwendeten Methoden stimmige Ergebnisse für den gegenwärtigen Klimazustand liefern, kann nicht davon ausgegangen werden, dass die mit diesen Methoden berechneten Ergebnisse auch für ein geändertes Klima Gültigkeit haben werden. Die Unsicherheiten der Vorhersagen sind teils meteorologischer, teils hydrologischer Herkunft. Während die Unsicherheiten der GCMs bereits bekannt und in der Diskussion sind, wurden die in diesem Kontext existierenden Probleme der hydrologischen Modelle bisher nur selten untersucht. Insbesondere die Unsicherheit in der Prozessbeschreibung innerhalb der hydrologischen Modelle muss genauer geprüft werden. In dieser Dissertation wurden verschiedene Beschreibungen des Evapotranspirationsprozesses (ET) untersucht, denn dieser Prozess wird durch den Klimawandel stark beeinflusst werden. Neun verschiedene ET-Modelle wurden ausgewählt und getestet. Anhand einer einfachen theoretischen Untersuchung zeigte sich, dass die ET-Modelle bereits auf eine geringfügige Änderung von nur einer Eingangsvariablen sehr unterschiedlich reagieren. Fraglich ist nun, wie sich die durch diese Modelle berechnete ET verändert, wenn die gesamten durch den Klimawandel hervorgerufenen Änderungen der Eingangsgrößen berücksichtigt werden. Dazu wurde ein auf dem HBV-Konzept basierendes räumlich verteiltes hydrologisches Modell aufgestellt und mit den aus den verschiedenen ET-Modellen resultierenden Ergebnissen als Input nacheinander gespeist. Die Modellierung wurde auf das Einzugsgebiet des Oberen Neckars (ca. 4000 km2) angewandt. Das Einzugsgebiet wurde in 13 Teileinzugsgebiete mit deutlichen Unterschieden eingeteilt. Die verschiedenen ET-Modelle wurden getestet, indem das hydrologische Modell auf klimatisch verschiedene Jahre geeicht und dann auf klimatisch entgegengesetzte Jahre ausgewertet wurde. Dazu wurden verschiedene Zeitreihen mit jeweils 10 klimatisch ähnlichen Jahren (10 kalte, 10 warme, 10 nasse und 10 trockene Jahre aus der Zeitreihe 1961-1990) zusammengestellt. Das hydrologische Modell wurde auf jeweils eine dieser Zeitreihen geeicht und anschließend folgendermaßen validiert. Im ersten Schritt wurde das Modell für dieselbe Zeitreihe ausgewertet, die auch für die Eichung verwendet worden war. Danach erfolgte die Auswertung auf die klimatisch entgegengesetzte Zeitreihe, beispielsweise wurde das Modell, dass auf die kalten Jahre geeicht worden war, nun hinsichtlich der erzielten Ergebnisse für die warmen Jahre untersucht. Eine geringe Abweichung der beiden Ergebnisse bedeutet eine gute Übertragbarkeit des Modells. Indem das Modell auch auf die kontinuierliche Zeitreihe 1991–2000 angewandt wurde, wurde die Übertragbarkeit zusätzlich getestet. Die Kalibrierung eines hydrologischen Modells, das den Einfluss eines Klimawandels bestimmen soll, stellt eine besondere Herausforderung dar - nicht nur bei der Auswahl von geeigneten Perioden für die Kalibrierung und die Validierung, sondern auch bei der Aufstellung einer geeigneten Zielfunktion. Eine gängige Zielfunktion ist die Nash-Sutcliffe-Effizienz. Die Güte des Modells wird dabei durch den Vergleich berechneter Werte mit beobachteten Werten ermittelt. Dieser Vergleich wird meist anhand von Tageswerten durchgeführt, was zu unerkannten systematischen Fehlern führen kann. In dem hier gewählten Ansatz wird ein auf Simulated-Annealing basierender Optimierungsalgorithmus vorgestellt, der zur Kalibrierung nicht nur Tageswerte, sondern zusätzlich auch Jahres- und Extremwerte in unterschiedlichen Kombinationen verwendet. Welche Kalibrierung sich am besten zur Bestimmung der Auswirkungen von Klimaänderungen eignet, wurde durch einen umfangreichen Vergleich der Ergebnisse festgestellt. Auch dabei wurden wieder unterschiedliche Zeitskalen verwendet: die Ergebnisse wurden nicht nur auf Tagesbasis ausgewertet, sondern auch zu Wochen, Monaten, Jahreszeiten, Halbjahren und ganzen Jahren aggregiert. Die Ergebnisse zeigen, dass einige der ET-Modelle, die unter den gegenwärtigen Klimabedingungen realistische Werte berechnen, dies bei geänderten Klimabedingungen nicht mehr vermögen. Weiterhin hat sich gezeigt, dass eine nur auf Tageswerten basierende Kalibrierung zu unzureichenden Ergebnissen bei der Übertragung der Modelle zwischen klimatisch unterschiedlich ausgeprägten Zeitreihen führt. Der Einsatz einer Zielfunktion, die sowohl Tageswerte als auch Jahresaggregationen der Tageswerte berücksichtigt, hat sich hingegen bewährt. Climate change (CC) will impact water resources. Assessing the extent of these impacts in due time is an important task, as it forms the basis for decision making. Unfortunately, the extent of this forecasted impact depends very much on data and tools used for this task. Although such methods might work well with present climatic conditions, it has to be doubted whether their results can still be relied upon in a changed climate. The uncertainties in the forecasts are partly of meteorological and partly of hydrological origin. Whereas the uncertainties of GCMs are well known and often discussed, the problems of hydrological models in this context are seldom investigated. In particular the uncertainty in process representation within the hydrological models must be revised. This dissertation focuses on the representation of the evapotranspiration (ET) process, because this process will be strongly influenced by CC. For this purpose, the suitability of nine different ET models was investigated. In a theoretical investigation, the sensitivity of the ET models to only a small change in temperature was found to be very different. Thus the question had to be raised as to how the resulting ET from these models will change with the entire predicted CC. Therefore a spatially distributed hydrological model based on the HBV concept was set up and the results of the different ET models were used consecutively as input to the hydrological model. The modelling was applied on the Upper Neckar catchment, a mesoscale river in southwestern Germany with a basin size of about 4,000 km2. This catchment was divided into 13 subcatchments with different subcatchment characteristics. The suitability of the different ET approaches was checked by calibrating the hydrological model on different climatic periods and then applying the model on other climatic periods. Thus, different 10-year periods with different climatic conditions were compiled: 10 cold, 10 warm, 10 wet and 10 dry years from the time series 1961–1990 were collected. The first step was to adapt the model to the same period it was calibrated to. Then the model was applied to other 10 years, i.e. the model calibrated on for example, the cold years was used on the warm years. The transferability was also checked by applying the models on the period 1991–2000. For the investigation of the impact of CC, the calibration of the model must meet special requirements. Apart from the selection of proper periods for calibration and validation, this also concerns the establishment of a suitable objective function. Such a function is the Nash Sutcliffe efficiency. Usually it is calculated comparing observed and modelled daily values. In this study it is shown that problems in the transfer from one climatic condition to the other cannot be detected on the base of daily values. Therefore parameter sets were optimized by an automatic calibration procedure based on Simulated Annealing, which considered the model performance on different time scales simultaneously (days up to years). As the results show, some of the ET models, which work well under stationary conditions, are not able to reproduce changes in a realistic manner. The results also show that calibrating a hydrological model that is supposed to handle short as well as long term signals becomes an important task; the objective function especially has to be chosen very carefully.
Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2007Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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more_vert Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2007Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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description Publicationkeyboard_double_arrow_right Project milestone , Other literature type 2022Publisher:Zenodo D'Oria, Marco; Secci, Daniele; Tanda, Maria Giovanna; Todaro, Valeria; Zanini, Andrea;This Milestone, namely M3.3, is part of Task 3.3 “Downscaling of future climate projections at the case-study scale and their transfer to the Partners”. The aim of M3.3 is to outline the results of the climate change evaluation over the investigated pilot sites. For the future projections of the climate variables (precipitation and temperature), the data provided by EURO-CORDEX initiative under two emission scenarios (RCP4.5 and RCP8.5) are used. The main information on the pilot sites, available data, analyses and results are presented. The data are freely downloadable from the web repository https://doi.org/10.5281/zenodo.7247977. This project is part of the PRIMA Programme supported by the European Union's Horizon 2020 Research and Innovation Programme under Grant Agreement No 1923.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Project milestone , Other literature type 2022Publisher:Zenodo D'Oria, Marco; Secci, Daniele; Tanda, Maria Giovanna; Todaro, Valeria; Zanini, Andrea;This Milestone, namely M3.3, is part of Task 3.3 “Downscaling of future climate projections at the case-study scale and their transfer to the Partners”. The aim of M3.3 is to outline the results of the climate change evaluation over the investigated pilot sites. For the future projections of the climate variables (precipitation and temperature), the data provided by EURO-CORDEX initiative under two emission scenarios (RCP4.5 and RCP8.5) are used. The main information on the pilot sites, available data, analyses and results are presented. The data are freely downloadable from the web repository https://doi.org/10.5281/zenodo.7247977. This project is part of the PRIMA Programme supported by the European Union's Horizon 2020 Research and Innovation Programme under Grant Agreement No 1923.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Conference object 2021 ItalyPublisher:Zenodo Funded by:EC | AGROinLOGEC| AGROinLOGPari L; Alfano V; Suardi A; Bergonzoli S; Stefanoni W; Lazar S; Latterini F; Attolico C; Palmieri N; Mattei P.;This work has been developed under the AGROinLOG Project, “Demonstration of innovative integrated biomass logistics centres for the Agro-industry sector in Europe”. An Integrated Biomass Logistics Center (IBLC), is based on the introduction of new production chains into existing agro-industries by using new biomass feedstock. The AGROinLOG Project has dedicated great attention to investigate the potential of cereal chaff as a valuable resource.Chaff is the fine fraction of the thrashing residues, not usually collected. Chaff is made up of glumes, seed husks, rachis and the tinner part of the cereal stems, whole and cracked kernels, as well as weed seeds.Currently there are several mechanical solutions available on the market for chaff recovery, and others are still at prototype stage, but theyare not so common and very often unknown to the farmers.So far, the literature reportsfew cases of chaff collection with the specific purpose of weed seeds removal, but it still lacks specificexperiments on these machinesintentionally used for biomass collection.For this reason, during the Project AGROinLOG a series of large field tests were performed using an independent scientific approach with different kind of chaff harvesting technologiesin France, Sweden and Italy from 2017 to 2019.The present study collects the results of these activities with the aim to fill that gap and provide deeper understanding in the possibility to enhance the current cereal harvesting method, in order to improve the quantity of biomass collected by including the chaff. Proceedings of the 29th European Biomass Conference and Exhibition, 26-29 April 2021, Online, pp. 62-68
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visibility 6visibility views 6 download downloads 5 Powered bymore_vert add ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Other literature type , Conference object 2021 ItalyPublisher:Zenodo Funded by:EC | AGROinLOGEC| AGROinLOGPari L; Alfano V; Suardi A; Bergonzoli S; Stefanoni W; Lazar S; Latterini F; Attolico C; Palmieri N; Mattei P.;This work has been developed under the AGROinLOG Project, “Demonstration of innovative integrated biomass logistics centres for the Agro-industry sector in Europe”. An Integrated Biomass Logistics Center (IBLC), is based on the introduction of new production chains into existing agro-industries by using new biomass feedstock. The AGROinLOG Project has dedicated great attention to investigate the potential of cereal chaff as a valuable resource.Chaff is the fine fraction of the thrashing residues, not usually collected. Chaff is made up of glumes, seed husks, rachis and the tinner part of the cereal stems, whole and cracked kernels, as well as weed seeds.Currently there are several mechanical solutions available on the market for chaff recovery, and others are still at prototype stage, but theyare not so common and very often unknown to the farmers.So far, the literature reportsfew cases of chaff collection with the specific purpose of weed seeds removal, but it still lacks specificexperiments on these machinesintentionally used for biomass collection.For this reason, during the Project AGROinLOG a series of large field tests were performed using an independent scientific approach with different kind of chaff harvesting technologiesin France, Sweden and Italy from 2017 to 2019.The present study collects the results of these activities with the aim to fill that gap and provide deeper understanding in the possibility to enhance the current cereal harvesting method, in order to improve the quantity of biomass collected by including the chaff. Proceedings of the 29th European Biomass Conference and Exhibition, 26-29 April 2021, Online, pp. 62-68
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2021 ItalyEvelina Volpe; Loredana Antronico; Francesca Ardizzone; Roberto Coscarelli; Stefano Luigi Gariano; Alessandro Mondini;Earth observation (EO) data are useful tools to analyse geomorphological processes, among which slow-moving landslides triggered by rainfall. EO data are also used to evaluate climate change and to assess its impact on geomorphological processes and geo-hydrological phenomena. The latter is the topic of the Project OT4Clima (Innovative Earth Observation technologies to study Climate Change and its impact on the environment) joined by CNR-IRPI within a consortium that includes other CNR institutes, universities and private companies. The OT4CLIMA project moves from the awareness that the impacts of climate change on the environment need to be better observed, understood, and modelled, especially at a regional scale, in order to put in place appropriate and effective risk mitigation strategies. Within the project, the CNR-IRPI group works on the development of rigorous methods and procedures for evaluating the impact of climate and its change on landslides, in particular on those characterized by a slow cinematic, at a regional scale. The test site is represented by four catchments located in the Basilicata region, southern Italy, namely the basins of the Bradano, Basento, Agri, and Sinni rivers. Long-term rainfall series gathered from 22 rain gauges located in the four catchments are analysed to evaluate the presence of temporal trends. To this aim, non-parametric and statistical tests are applied to the series. Historical landslide information is gathered from the analysis of the IFFI (Inventario dei Fenomeni Franosi in Italia) database, the Idrogeo platform (https://idrogeo.isprambiente.it/app/) and the AVI (Aree Vulnerate in Italia) catalogue. Only some types of landslide movements are considered, namely rotational-translational slides, slow slides/flows, complex movements. Moreover, Copernicus Sentinel-1 images are employed to detect the spatial and temporal distribution of slow earth surface deformations. The obtained results are used for checking the completeness of the landslide inventories. More in detail, the deformation maps of the test site are obtained by means of the application of the SBAS (Small BAseline Subset) technique to three datasets of Sentinel-1 images: t146 ascending orbit and t51 and t124 descending orbits, for the period 2015-2020. Then, a comparative analysis of rainfall data with displacement series is carried out with the aim of identifying clusters of satellite measurements with homogeneous behaviour likely correlated to variations in the rainfall regime. In particular, only the points with a mean velocity in the observation higher than 0.1 cm/year are considered to be moving. Moreover, only the displacement series of points located in areas mapped as landslides - as for the historical inventories - and sited within the influence regions of each rain gauge in the study area are analysed. A 10-km circular buffer centred in the stations are used to define the influence region of each station. The displacement series are analysed and compared to the rainfall series to search for correlations and to evaluate the effects of climate drivers on slow moving landslides.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object 2021 ItalyEvelina Volpe; Loredana Antronico; Francesca Ardizzone; Roberto Coscarelli; Stefano Luigi Gariano; Alessandro Mondini;Earth observation (EO) data are useful tools to analyse geomorphological processes, among which slow-moving landslides triggered by rainfall. EO data are also used to evaluate climate change and to assess its impact on geomorphological processes and geo-hydrological phenomena. The latter is the topic of the Project OT4Clima (Innovative Earth Observation technologies to study Climate Change and its impact on the environment) joined by CNR-IRPI within a consortium that includes other CNR institutes, universities and private companies. The OT4CLIMA project moves from the awareness that the impacts of climate change on the environment need to be better observed, understood, and modelled, especially at a regional scale, in order to put in place appropriate and effective risk mitigation strategies. Within the project, the CNR-IRPI group works on the development of rigorous methods and procedures for evaluating the impact of climate and its change on landslides, in particular on those characterized by a slow cinematic, at a regional scale. The test site is represented by four catchments located in the Basilicata region, southern Italy, namely the basins of the Bradano, Basento, Agri, and Sinni rivers. Long-term rainfall series gathered from 22 rain gauges located in the four catchments are analysed to evaluate the presence of temporal trends. To this aim, non-parametric and statistical tests are applied to the series. Historical landslide information is gathered from the analysis of the IFFI (Inventario dei Fenomeni Franosi in Italia) database, the Idrogeo platform (https://idrogeo.isprambiente.it/app/) and the AVI (Aree Vulnerate in Italia) catalogue. Only some types of landslide movements are considered, namely rotational-translational slides, slow slides/flows, complex movements. Moreover, Copernicus Sentinel-1 images are employed to detect the spatial and temporal distribution of slow earth surface deformations. The obtained results are used for checking the completeness of the landslide inventories. More in detail, the deformation maps of the test site are obtained by means of the application of the SBAS (Small BAseline Subset) technique to three datasets of Sentinel-1 images: t146 ascending orbit and t51 and t124 descending orbits, for the period 2015-2020. Then, a comparative analysis of rainfall data with displacement series is carried out with the aim of identifying clusters of satellite measurements with homogeneous behaviour likely correlated to variations in the rainfall regime. In particular, only the points with a mean velocity in the observation higher than 0.1 cm/year are considered to be moving. Moreover, only the displacement series of points located in areas mapped as landslides - as for the historical inventories - and sited within the influence regions of each rain gauge in the study area are analysed. A 10-km circular buffer centred in the stations are used to define the influence region of each station. The displacement series are analysed and compared to the rainfall series to search for correlations and to evaluate the effects of climate drivers on slow moving landslides.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 ItalyPublisher:European Journal of Social Impact and Circular Economy Funded by:EC | BIO-PLASTICS EUROPEEC| BIO-PLASTICS EUROPEAuthors: Eleonora Foschi; Selena Aureli; Angelo Paletta;handle: 11585/939603
Bio-based and biodegradable plastics (BBPs) are innovative materials, wholly or partially produced from biomass, with the potential to enhance the circulation of resources in the biological cycle of the Ellen MacArthur Foundation’s butterfly diagram. Although BBPs are generally considered more environmental-friendly than conventional plastics, robust scientific evidence is still missing. The lack of tools and metrics to assess the circularity and sustainability of the BBPs industry poses relevant challenges for its upscaling and contribution to climate neutrality goals in Europe. It calls for adopting system and life cycle thinking, guided by multi-level and multi-dimensional examinations, which led researchers to build a comprehensive picture of trends, gaps and future orientations that may boost a sustainable circular bioeconomy in the sector. The value- chain based and multi-faceted SWOT analysis that emerged from the intersection of system and corporate data reveals the need to establish a combined circular bioeconomy strategy where incentives to integrated local supply chain, dedicated EPR scheme, eco-design guidelines, revised EoL standards, new clear labelling schemes and harmonised sustainability criteria should be prioritized and conjointly pursued to accelerate the transition towards a sustainable circular bioeconomy of the BBPs value chain. European Journal of Social Impact and Circular Economy, V. 4 N. 2 (2023)
Archivio istituziona... arrow_drop_down European Journal of Social Impact and Circular EconomyArticle . 2023 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert Archivio istituziona... arrow_drop_down European Journal of Social Impact and Circular EconomyArticle . 2023 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article 2023 ItalyPublisher:European Journal of Social Impact and Circular Economy Funded by:EC | BIO-PLASTICS EUROPEEC| BIO-PLASTICS EUROPEAuthors: Eleonora Foschi; Selena Aureli; Angelo Paletta;handle: 11585/939603
Bio-based and biodegradable plastics (BBPs) are innovative materials, wholly or partially produced from biomass, with the potential to enhance the circulation of resources in the biological cycle of the Ellen MacArthur Foundation’s butterfly diagram. Although BBPs are generally considered more environmental-friendly than conventional plastics, robust scientific evidence is still missing. The lack of tools and metrics to assess the circularity and sustainability of the BBPs industry poses relevant challenges for its upscaling and contribution to climate neutrality goals in Europe. It calls for adopting system and life cycle thinking, guided by multi-level and multi-dimensional examinations, which led researchers to build a comprehensive picture of trends, gaps and future orientations that may boost a sustainable circular bioeconomy in the sector. The value- chain based and multi-faceted SWOT analysis that emerged from the intersection of system and corporate data reveals the need to establish a combined circular bioeconomy strategy where incentives to integrated local supply chain, dedicated EPR scheme, eco-design guidelines, revised EoL standards, new clear labelling schemes and harmonised sustainability criteria should be prioritized and conjointly pursued to accelerate the transition towards a sustainable circular bioeconomy of the BBPs value chain. European Journal of Social Impact and Circular Economy, V. 4 N. 2 (2023)
Archivio istituziona... arrow_drop_down European Journal of Social Impact and Circular EconomyArticle . 2023 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert Archivio istituziona... arrow_drop_down European Journal of Social Impact and Circular EconomyArticle . 2023 . Peer-reviewedData sources: European Union Open Data Portaladd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis , Thesis 2011Embargo end date: 01 Aug 2011 Italy, GermanyPublisher:Universität Stuttgart Authors: Tahnee María; González Martínez;doi: 10.18419/opus-1909
Die Metropolregion Santiago (MRS) verzeichnete in den letzten Jahren ein großes Bevölkerungswachstum und einen Anstieg des Lebensstandards. Als Folge davon hat sich das Aufkommen von Siedlungsabfällen fast innerhalb von 10 Jahren verdoppelt. Die Daten für den aktuellen Zustand des Abfallmanagements wurden durch Feldforschungen, Fragebögen, Feldbesuche und durch eine systematische Auswertung von bereits vorliegender Literatur erhoben. Das integrative Nachhaltigkeitskonzept der Helmholtz-Gemeinschaft diente als konzeptioneller Rahmen für die Studie. Zur Bewertung des aktuellen Zustands des Abfallmanagements wurden Nachhaltigkeitsindikatoren identifiziert, deren aktuelle Werte bestimmt und Zielwerte festgelegt. Die Nachhaltigkeitsanalyse zeigt, dass die größten Defizite darin liegen, dass nahezu die gesamte Abfallmenge ohne jegliche Vorbehandlung deponiert wird. Damit verbunden sind lang andauernde Emissionen von Treibhausgasen. Um herauszufinden, wie der informelle Sektor im Abfallmanagement zur Nachhaltigkeit beiträgt, wurden veröffentlichten Erfahrungen mit informellen Müllsammlern in Lateinamerika analysiert. Dabei wurden die entsprechenden Akteure sowie etablierte Allianzen zwischen diesen Akteuren identifiziert. Schlüsselfaktoren für ein nachhaltiges Abfallmanagement unter Einbeziehung des informellen Sektors sind die Legalisierung der Schattenwirtschaft und feste Verträge mit Partnerunternehmen. Relevante Akteure für die Gestaltung der Arbeitsbedingungen des informellen Sektors sind Vertreter privater und öffentlicher Unternehmen, einzelne gesellschaftliche Gruppen sowie Vertreter von Nichtregierungsorganisationen. Schließlich wurden drei explorative Szenarien für das Bezugsjahr 2030 entwickelt: Business as Usual (BAU), Collective Responsibility (CR) und Market Individualism (MI). Das BAU-Szenario enthält eine getrennte Sammlung von Bioabfall und von Wertstoffen; hervorgerufen durch einen verstärkten Organisationsgrad der informellen Müllsammler und den Ausbau von Bring-Systemen. Die Errichtung mechanischer Sortierungsanlagen trägt zur Verwertung der Materialien und zum Recycling bei. Das entstehende Deponiegas und Biogas wird als erneuerbare Energiequelle genutzt. Das CR-Szenario enthält eine getrennte Sammlung von Bioabfall und Wertstoffen. Dies wird erreicht durch eine verstärkte Zusammenarbeit mit den jetzt organisierten Müllsammlern und durch den Ausbau von Bring-Systemen. Mechanische Sortierungsanlagen tragen zur Verwertung von Materialien und zum Recycling bei. Durch Abtrennung einer heizwertreichen Fraktion in mechanisch biologischen Anlagen werden Sekundärbrennstoffe produziert. Darüber hinaus werden, das entstehende Deponiegas sowie das in Vergärungsanlagen erzeugte Biogas energetisch genutzt. Im MI-Szenario sind Wiederverwertungsstrategien von untergeordneter Bedeutung. Es gibt kein Interesse an einer Zusammenarbeit mit den informellen Müllsammlern und keine Anreize für einen verstärkten Organisationsgrad in diesem Bereich. Deshalb bleibt die Branche weitgehend informell. Technologische Entwicklungen in diesem Szenario enthalten die mechanische Sortierung von gemischtem Abfall und die energetische Verwertung von Deponiegas. Die Ergebnisse zeigten, dass das Pro-Kopf-Aufkommen an Siedlungsabfällen im Jahr 2030 in allen Szenarien deutlich höher als im Jahr 2007 ist und der festgelegte Zielwert von 1,6 kg/Kopf/Tag nicht erreicht wurde. Den höchsten Wert (2,0 kg/Kopf/Tag) weist das MI-Szenario auf, der niedrigste Wert (1,8 kg/Kopf/Tag) wurde im CR-Szenario gefunden. Eine Vorbehandlung der gesammelten gemischten Siedlungsabfälle findet nur im CR-Szenario statt, der entsprechende Wert beträgt 18 %, der Zielwert wird damit nicht erreicht. Die höchsten Treibhausgasemissionen treten im MI-Szenario (295 kg CO2-eq/Kopf/Jahr) auf, den niedrigsten Wert (155 kg CO2-eq/Kopf/Jahr) findet man im CR-Szenario. All diese Werte sind, verglichen mit dem festgelegten Zielwert von 71 kg/Kopf/Jahr, deutlich zu hoch. Der Zielwert für die Wiederverwertungsquote wurde im CR-Szenario erreicht (43 %), den niedrigsten Wert zeigt das MI-Szenario (20 %). Die Zielwerte für das Einkommen der Müllsammler wurden im CR-Szenario erreicht (128 %). Im MI-Szenario beträgt dieser Wert lediglich 51 %. Die Kosten für das Abfallmanagement im Verhältnis zum Bruttoinlandsprodukt sinken in den drei Szenarien. Aus den Ergebnissen lässt sich ableiten, dass ein Einbeziehen von mehreren Faktoren erforderlich ist, um die Nachhaltigkeit des Abfallmanagementsystems in den drei Szenarien zu steigern und dass es von wesentlicher Bedeutung ist, schon vorhandene und gut funktionierende Subsysteme, wie das der informellen Müllsammler, zu nutzen und zu stärken. Ebenso ist die Umsetzung robuster Behandlungstechnologien, die einen Beitrag zur Reduktion negativer Umweltauswirkungen leisten, zu forcieren. Diese Technologien sollten preiswert sein, um ihren Einsatz auch unter wirtschaftlich vertretbaren Gesichtspunkten zu ermöglichen. The Metropolitan Region of Santiago (MRS) has experienced a large growth in population in recent years and a rise in the standard of living. Therefore, its municipal solid waste (MSW) has almost doubled in 10 years. Data about the current situation of MSW management in MRS were collected during field research, interviews, field visits and by a systematic evaluation of existing documentary literature. The Integrative Sustainability Concept of the Helmholtz Association provided a conceptual framework for the study. The sustainability analysis showed that the largest deficits are in the current amount of MSW deposited at sanitary landfills without any pre-treatment, and the emission values of greenhouse gases associated with waste treatment and final disposal. To find out if and how the informal waste sector contributes to sustainability, experiences of organization of informal primary collectors in Latin America were analyzed. The key factors which have an influence on their working conditions were identified. These factors include the existence of a legal framework for the informal waste sector; the existence of alliances with production companies guaranteeing a reliable industrial market for secondary raw materials and expansion of activities beyond collection of recyclables. Key stakeholders included people from the public and the private sector, from the civil society and from NGOs. Three explorative scenarios were developed for the year 2030: Business as Usual (BAU), Collective Responsibility (CR), and Market Individualism (MI). Waste generation, waste composition and different practices of waste collection, recovery and treatment were taken into account for the scenarios formulation. The BAU scenario incorporated separate collection of biowaste, recyclable materials with some participation of organized primary collectors and an expansion of drop-off systems. The mechanical sorting of mixed waste was introduced. The utilization of landfill gas as an energy source was promoted and the production of biogas in anaerobic digestion plants was implemented. The CR scenario incorporated separate collection of biowaste, commitment to work together with the primary waste collectors and an expansion of drop-off systems. The mechanical and mechanical biological treatment of mixed waste was introduced. The utilization of landfill gas as an energy source is promoted and the production of biogas in anaerobic digestion plants was implemented. In the MI separate collection of biowaste and recyclable materials was irrelevant. An organization of the informal primary collectors did not take place. Mechanical sorting of mixed waste was introduced. Utilization of landfill gas as an energy source was promoted. The results showed that the generation flux of MSW is at least 50% larger in all scenarios in 2030 compared to the year 2007, exceeding the limit value proposed. The highest value (2.0 kg/(person•day) is obtained in the MI scenario, and the lowest (1.8 kg/(person•day)) in the CR scenario. Pre-treatment of mixed MSW collected is only achieved in the CR scenario with a value of 18%, however, the target value is not achieved. The highest greenhouse gas emission value is obtained in the MI scenario with 295 kg CO2eq/(person•year), the lowest value of 155 kg CO2-eq/(person•year) is obtained in the CR scenario; a value that is still very high in comparison with the suggested target. The largest recycling rate is obtained in the CR scenario (43%), which is better than the target value proposed, the lowest recycling rate is obtained in the MI scenario (20%). The income of primary collectors in comparison with the income of one individual household is improved significantly in the CR scenario (128%), in the MI scenario, earnings of primary collectors decreased to 51%. The share of GDP spent on MSW management is lower in 2030, compared to the year 2007, in all scenarios the largest value of 0.17% is obtained in the CR scenario, and the lowest value of 0.14% is obtained in the MI scenario. The results of the evaluation of the scenarios showed that the largest sustainability deficits are the amount of mixed MSW which undergoes pre-treatment, the greenhouse gas emissions associated to MSW treatment and disposal, as well as the share of GDP spent on MSW management. The results obtained suggested that an integration of several factors is required to increase sustainability. It is essential to strengthen and take advantage of the subsystems which are working within the waste management system, as in the case of the informal sector. In addition to the implementation of flexible treatment technologies which help to decrease negative environmental impacts. Moreover, the costs of these technologies should be affordable, allowing a better financial management.
Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2011Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen 2 citations 2 popularity Average influence Average impulse Average Powered by BIP!
more_vert Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2011Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.18419/opus-1909&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis , Thesis 2011Embargo end date: 01 Aug 2011 Italy, GermanyPublisher:Universität Stuttgart Authors: Tahnee María; González Martínez;doi: 10.18419/opus-1909
Die Metropolregion Santiago (MRS) verzeichnete in den letzten Jahren ein großes Bevölkerungswachstum und einen Anstieg des Lebensstandards. Als Folge davon hat sich das Aufkommen von Siedlungsabfällen fast innerhalb von 10 Jahren verdoppelt. Die Daten für den aktuellen Zustand des Abfallmanagements wurden durch Feldforschungen, Fragebögen, Feldbesuche und durch eine systematische Auswertung von bereits vorliegender Literatur erhoben. Das integrative Nachhaltigkeitskonzept der Helmholtz-Gemeinschaft diente als konzeptioneller Rahmen für die Studie. Zur Bewertung des aktuellen Zustands des Abfallmanagements wurden Nachhaltigkeitsindikatoren identifiziert, deren aktuelle Werte bestimmt und Zielwerte festgelegt. Die Nachhaltigkeitsanalyse zeigt, dass die größten Defizite darin liegen, dass nahezu die gesamte Abfallmenge ohne jegliche Vorbehandlung deponiert wird. Damit verbunden sind lang andauernde Emissionen von Treibhausgasen. Um herauszufinden, wie der informelle Sektor im Abfallmanagement zur Nachhaltigkeit beiträgt, wurden veröffentlichten Erfahrungen mit informellen Müllsammlern in Lateinamerika analysiert. Dabei wurden die entsprechenden Akteure sowie etablierte Allianzen zwischen diesen Akteuren identifiziert. Schlüsselfaktoren für ein nachhaltiges Abfallmanagement unter Einbeziehung des informellen Sektors sind die Legalisierung der Schattenwirtschaft und feste Verträge mit Partnerunternehmen. Relevante Akteure für die Gestaltung der Arbeitsbedingungen des informellen Sektors sind Vertreter privater und öffentlicher Unternehmen, einzelne gesellschaftliche Gruppen sowie Vertreter von Nichtregierungsorganisationen. Schließlich wurden drei explorative Szenarien für das Bezugsjahr 2030 entwickelt: Business as Usual (BAU), Collective Responsibility (CR) und Market Individualism (MI). Das BAU-Szenario enthält eine getrennte Sammlung von Bioabfall und von Wertstoffen; hervorgerufen durch einen verstärkten Organisationsgrad der informellen Müllsammler und den Ausbau von Bring-Systemen. Die Errichtung mechanischer Sortierungsanlagen trägt zur Verwertung der Materialien und zum Recycling bei. Das entstehende Deponiegas und Biogas wird als erneuerbare Energiequelle genutzt. Das CR-Szenario enthält eine getrennte Sammlung von Bioabfall und Wertstoffen. Dies wird erreicht durch eine verstärkte Zusammenarbeit mit den jetzt organisierten Müllsammlern und durch den Ausbau von Bring-Systemen. Mechanische Sortierungsanlagen tragen zur Verwertung von Materialien und zum Recycling bei. Durch Abtrennung einer heizwertreichen Fraktion in mechanisch biologischen Anlagen werden Sekundärbrennstoffe produziert. Darüber hinaus werden, das entstehende Deponiegas sowie das in Vergärungsanlagen erzeugte Biogas energetisch genutzt. Im MI-Szenario sind Wiederverwertungsstrategien von untergeordneter Bedeutung. Es gibt kein Interesse an einer Zusammenarbeit mit den informellen Müllsammlern und keine Anreize für einen verstärkten Organisationsgrad in diesem Bereich. Deshalb bleibt die Branche weitgehend informell. Technologische Entwicklungen in diesem Szenario enthalten die mechanische Sortierung von gemischtem Abfall und die energetische Verwertung von Deponiegas. Die Ergebnisse zeigten, dass das Pro-Kopf-Aufkommen an Siedlungsabfällen im Jahr 2030 in allen Szenarien deutlich höher als im Jahr 2007 ist und der festgelegte Zielwert von 1,6 kg/Kopf/Tag nicht erreicht wurde. Den höchsten Wert (2,0 kg/Kopf/Tag) weist das MI-Szenario auf, der niedrigste Wert (1,8 kg/Kopf/Tag) wurde im CR-Szenario gefunden. Eine Vorbehandlung der gesammelten gemischten Siedlungsabfälle findet nur im CR-Szenario statt, der entsprechende Wert beträgt 18 %, der Zielwert wird damit nicht erreicht. Die höchsten Treibhausgasemissionen treten im MI-Szenario (295 kg CO2-eq/Kopf/Jahr) auf, den niedrigsten Wert (155 kg CO2-eq/Kopf/Jahr) findet man im CR-Szenario. All diese Werte sind, verglichen mit dem festgelegten Zielwert von 71 kg/Kopf/Jahr, deutlich zu hoch. Der Zielwert für die Wiederverwertungsquote wurde im CR-Szenario erreicht (43 %), den niedrigsten Wert zeigt das MI-Szenario (20 %). Die Zielwerte für das Einkommen der Müllsammler wurden im CR-Szenario erreicht (128 %). Im MI-Szenario beträgt dieser Wert lediglich 51 %. Die Kosten für das Abfallmanagement im Verhältnis zum Bruttoinlandsprodukt sinken in den drei Szenarien. Aus den Ergebnissen lässt sich ableiten, dass ein Einbeziehen von mehreren Faktoren erforderlich ist, um die Nachhaltigkeit des Abfallmanagementsystems in den drei Szenarien zu steigern und dass es von wesentlicher Bedeutung ist, schon vorhandene und gut funktionierende Subsysteme, wie das der informellen Müllsammler, zu nutzen und zu stärken. Ebenso ist die Umsetzung robuster Behandlungstechnologien, die einen Beitrag zur Reduktion negativer Umweltauswirkungen leisten, zu forcieren. Diese Technologien sollten preiswert sein, um ihren Einsatz auch unter wirtschaftlich vertretbaren Gesichtspunkten zu ermöglichen. The Metropolitan Region of Santiago (MRS) has experienced a large growth in population in recent years and a rise in the standard of living. Therefore, its municipal solid waste (MSW) has almost doubled in 10 years. Data about the current situation of MSW management in MRS were collected during field research, interviews, field visits and by a systematic evaluation of existing documentary literature. The Integrative Sustainability Concept of the Helmholtz Association provided a conceptual framework for the study. The sustainability analysis showed that the largest deficits are in the current amount of MSW deposited at sanitary landfills without any pre-treatment, and the emission values of greenhouse gases associated with waste treatment and final disposal. To find out if and how the informal waste sector contributes to sustainability, experiences of organization of informal primary collectors in Latin America were analyzed. The key factors which have an influence on their working conditions were identified. These factors include the existence of a legal framework for the informal waste sector; the existence of alliances with production companies guaranteeing a reliable industrial market for secondary raw materials and expansion of activities beyond collection of recyclables. Key stakeholders included people from the public and the private sector, from the civil society and from NGOs. Three explorative scenarios were developed for the year 2030: Business as Usual (BAU), Collective Responsibility (CR), and Market Individualism (MI). Waste generation, waste composition and different practices of waste collection, recovery and treatment were taken into account for the scenarios formulation. The BAU scenario incorporated separate collection of biowaste, recyclable materials with some participation of organized primary collectors and an expansion of drop-off systems. The mechanical sorting of mixed waste was introduced. The utilization of landfill gas as an energy source was promoted and the production of biogas in anaerobic digestion plants was implemented. The CR scenario incorporated separate collection of biowaste, commitment to work together with the primary waste collectors and an expansion of drop-off systems. The mechanical and mechanical biological treatment of mixed waste was introduced. The utilization of landfill gas as an energy source is promoted and the production of biogas in anaerobic digestion plants was implemented. In the MI separate collection of biowaste and recyclable materials was irrelevant. An organization of the informal primary collectors did not take place. Mechanical sorting of mixed waste was introduced. Utilization of landfill gas as an energy source was promoted. The results showed that the generation flux of MSW is at least 50% larger in all scenarios in 2030 compared to the year 2007, exceeding the limit value proposed. The highest value (2.0 kg/(person•day) is obtained in the MI scenario, and the lowest (1.8 kg/(person•day)) in the CR scenario. Pre-treatment of mixed MSW collected is only achieved in the CR scenario with a value of 18%, however, the target value is not achieved. The highest greenhouse gas emission value is obtained in the MI scenario with 295 kg CO2eq/(person•year), the lowest value of 155 kg CO2-eq/(person•year) is obtained in the CR scenario; a value that is still very high in comparison with the suggested target. The largest recycling rate is obtained in the CR scenario (43%), which is better than the target value proposed, the lowest recycling rate is obtained in the MI scenario (20%). The income of primary collectors in comparison with the income of one individual household is improved significantly in the CR scenario (128%), in the MI scenario, earnings of primary collectors decreased to 51%. The share of GDP spent on MSW management is lower in 2030, compared to the year 2007, in all scenarios the largest value of 0.17% is obtained in the CR scenario, and the lowest value of 0.14% is obtained in the MI scenario. The results of the evaluation of the scenarios showed that the largest sustainability deficits are the amount of mixed MSW which undergoes pre-treatment, the greenhouse gas emissions associated to MSW treatment and disposal, as well as the share of GDP spent on MSW management. The results obtained suggested that an integration of several factors is required to increase sustainability. It is essential to strengthen and take advantage of the subsystems which are working within the waste management system, as in the case of the informal sector. In addition to the implementation of flexible treatment technologies which help to decrease negative environmental impacts. Moreover, the costs of these technologies should be affordable, allowing a better financial management.
Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2011Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.All Research productsarrow_drop_down <script type="text/javascript"> <!-- document.write('<div id="oa_widget"></div>'); document.write('<script type="text/javascript" src="https://beta.openaire.eu/index.php?option=com_openaire&view=widget&format=raw&projectId=10.18419/opus-1909&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 2 citations 2 popularity Average influence Average impulse Average Powered by BIP!
more_vert Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2011Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object , Other literature type 2011 ItalyPublisher:ETA-Florence Renewable Energies Authors: DELL'ANTONIA, Daniele; GUBIANI, Rino; PERGHER, Gianfranco;handle: 11390/1041808
The importance of emission control has increased sharply due to increased need of energy from combustion. However, biomass utilization in energy production is not free from problems because of physical and chemical characteristics which are substantially different from conventional energy sources. In this situation, the quantity and quality of emissions as well as used renewable source as wood or corn grain are often unknown. To assess this problem the paper addresses the objectives to quantify the amount of greenhouse gases during the combustion of corn as compared to the emissions in fossil combustion (natural gas, LPG and diesel boiler). The test was carried out in Friuli Venezia Giulia in 2006-2008 to determine the air pollution (CO, NO, NO2, NOx, SO2 and CO2) from fuel combustion in the family boilers with power between 20-30 kWt. The flue gas emission was measured with a professional semi-continuous multi-gas analyzer, (Vario plus industrial, MRU air Neckarsulm-Obereisesheim). Data showed a lower emission of fossil fuel compared to corn in family boilers in reference to pollutants in the flue gas (NOx, SO2 and CO). In particular way the biomass combustion make a higher concentration of carbon monoxide (for a incomplete combustion because there aren’t a good mixing between fuel and air) and nitrogen oxides (in relation at higher content of nitrogen in herbaceous biomass in comparison of another fuel). Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 1296-1304
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object , Other literature type 2011 ItalyPublisher:ETA-Florence Renewable Energies Authors: DELL'ANTONIA, Daniele; GUBIANI, Rino; PERGHER, Gianfranco;handle: 11390/1041808
The importance of emission control has increased sharply due to increased need of energy from combustion. However, biomass utilization in energy production is not free from problems because of physical and chemical characteristics which are substantially different from conventional energy sources. In this situation, the quantity and quality of emissions as well as used renewable source as wood or corn grain are often unknown. To assess this problem the paper addresses the objectives to quantify the amount of greenhouse gases during the combustion of corn as compared to the emissions in fossil combustion (natural gas, LPG and diesel boiler). The test was carried out in Friuli Venezia Giulia in 2006-2008 to determine the air pollution (CO, NO, NO2, NOx, SO2 and CO2) from fuel combustion in the family boilers with power between 20-30 kWt. The flue gas emission was measured with a professional semi-continuous multi-gas analyzer, (Vario plus industrial, MRU air Neckarsulm-Obereisesheim). Data showed a lower emission of fossil fuel compared to corn in family boilers in reference to pollutants in the flue gas (NOx, SO2 and CO). In particular way the biomass combustion make a higher concentration of carbon monoxide (for a incomplete combustion because there aren’t a good mixing between fuel and air) and nitrogen oxides (in relation at higher content of nitrogen in herbaceous biomass in comparison of another fuel). Proceedings of the 19th European Biomass Conference and Exhibition, 6-10 June 2011, Berlin, Germany, pp. 1296-1304
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Book 2021 ItalyPublisher:Universit� degli Studi di Bergamo Authors: COFFETTI, Denny;The main challenge for concrete industry - and in general for construction materials - is to serve the two major needs of human society, the protection of the environment, on one hand, and the requirements of buildings and infrastructures by the world?s growing population, on the other. In the past concrete industry has satisfied these needs well. However, for a variety of reasons, the situation has changed dramatically in the last years. First of all, the concrete industry is the largest consumer of natural resources. Secondly, Portland cement, the binder of modern concrete mixtures, is not as environmentally friendly. The world's cement production, in fact, contributes to the earth's atmosphere about 7% of the total CO2 emissions, CO2 being one of the primary greenhouse gas (GHG) responsible for global warming and climate change. As a consequence, concrete industry in the future has to face two antithetically needs. In other words, how the concrete industry can feed the growing population needs being - at the same time - sustainable? The answer to this question is represented by the ?3R-Green Strategy? widely discussed in the first chapter of this PhD thesis: Reduction in consumption of gross energy for construction materials production, Reduction in polluting emissions and Reduction in consuming not renewable natural resources. In particular, this thesis is focused on the alternative binders to Portland cement such as alkali-activated slag cements and calcium sulphoaluminate cement-based binders in order to manufacture sustainable mixtures for special applications such as repair mortars, lightweight reinforced plasters and concretes for slabs on ground. The experimental results show the feasibility of manufacturing both EN 1504-3 R3 class mortars and Portland-free concretes for jointless slabs on ground with calcium sulphoaluminate cement, supplementary cementitious materials (fly ash, ground granulated blast furnace slag) and hydrated lime instead of Portland cement. Moreover, alkali-activated mortars and concretes seem to be a reasonable alternative to natural hydraulic lime-based and/or traditional Portland cement-based mixtures for rehabilitation or restoration of ancient masonry buildings and existing concretes structures. Finally, a new sustainability index was developed taking into account the environmental impact, the performances and the durability of mixtures. In particular, in the environmental impact section, the natural raw materials consumption, the greenhouse gas emissions and the energy consumption have been considered. Furthermore, depending on the applications and the environments, design parameters and properties related to durability have been assigned to each mixture. less
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Book 2021 ItalyPublisher:Universit� degli Studi di Bergamo Authors: COFFETTI, Denny;The main challenge for concrete industry - and in general for construction materials - is to serve the two major needs of human society, the protection of the environment, on one hand, and the requirements of buildings and infrastructures by the world?s growing population, on the other. In the past concrete industry has satisfied these needs well. However, for a variety of reasons, the situation has changed dramatically in the last years. First of all, the concrete industry is the largest consumer of natural resources. Secondly, Portland cement, the binder of modern concrete mixtures, is not as environmentally friendly. The world's cement production, in fact, contributes to the earth's atmosphere about 7% of the total CO2 emissions, CO2 being one of the primary greenhouse gas (GHG) responsible for global warming and climate change. As a consequence, concrete industry in the future has to face two antithetically needs. In other words, how the concrete industry can feed the growing population needs being - at the same time - sustainable? The answer to this question is represented by the ?3R-Green Strategy? widely discussed in the first chapter of this PhD thesis: Reduction in consumption of gross energy for construction materials production, Reduction in polluting emissions and Reduction in consuming not renewable natural resources. In particular, this thesis is focused on the alternative binders to Portland cement such as alkali-activated slag cements and calcium sulphoaluminate cement-based binders in order to manufacture sustainable mixtures for special applications such as repair mortars, lightweight reinforced plasters and concretes for slabs on ground. The experimental results show the feasibility of manufacturing both EN 1504-3 R3 class mortars and Portland-free concretes for jointless slabs on ground with calcium sulphoaluminate cement, supplementary cementitious materials (fly ash, ground granulated blast furnace slag) and hydrated lime instead of Portland cement. Moreover, alkali-activated mortars and concretes seem to be a reasonable alternative to natural hydraulic lime-based and/or traditional Portland cement-based mixtures for rehabilitation or restoration of ancient masonry buildings and existing concretes structures. Finally, a new sustainability index was developed taking into account the environmental impact, the performances and the durability of mixtures. In particular, in the environmental impact section, the natural raw materials consumption, the greenhouse gas emissions and the energy consumption have been considered. Furthermore, depending on the applications and the environments, design parameters and properties related to durability have been assigned to each mixture. less
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Preprint 2009Publisher:Unknown Wagner, Klaus; Neuwirth, Julia; Janetschek, Hubert; Wagner, Klaus; Neuwirth, Julia; Janetschek, Hubert;Recent extreme weather events have resulted in an ongoing discussion on the issues of land use and compensation payments within Austrian agriculture. Building on a functional evaluation system for agricultural lands as developed within the Interreg IIIB project “ILUP”, the national project “Agriculture and Flooding” has as its goal to classify the flood-protection contribution and flood sensitivity of agricultural lands. This, in turn, enables the recommendation of targeted measures for potentially improving flood situations, as well as an estimate of their implementation costs. In addition to the digital soil map, other fundamental sources used for the project are the digital flood risk map, IACS land-use data and works by the Institute for Land and Water Management Research. Reference values and marginal returns sourced from the Federal Institute of Agricultural Economics also flow into the cost estimates for the recommended combination. The results will contribute to an understanding of the multifunctionality of agricultural lands and to the setting of priorities on a regional scale regarding packaged flood-prevention and damage-minimization. However, the results at hand can only serve as one step toward regional flood protection projects, whose development will require the cooperation of all interest groups.
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For further information contact us at helpdesk@openaire.eu1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Other literature type , Preprint 2009Publisher:Unknown Wagner, Klaus; Neuwirth, Julia; Janetschek, Hubert; Wagner, Klaus; Neuwirth, Julia; Janetschek, Hubert;Recent extreme weather events have resulted in an ongoing discussion on the issues of land use and compensation payments within Austrian agriculture. Building on a functional evaluation system for agricultural lands as developed within the Interreg IIIB project “ILUP”, the national project “Agriculture and Flooding” has as its goal to classify the flood-protection contribution and flood sensitivity of agricultural lands. This, in turn, enables the recommendation of targeted measures for potentially improving flood situations, as well as an estimate of their implementation costs. In addition to the digital soil map, other fundamental sources used for the project are the digital flood risk map, IACS land-use data and works by the Institute for Land and Water Management Research. Reference values and marginal returns sourced from the Federal Institute of Agricultural Economics also flow into the cost estimates for the recommended combination. The results will contribute to an understanding of the multifunctionality of agricultural lands and to the setting of priorities on a regional scale regarding packaged flood-prevention and damage-minimization. However, the results at hand can only serve as one step toward regional flood protection projects, whose development will require the cooperation of all interest groups.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object , Other literature type 2010 ItalyPublisher:ETA-Florence Renewable Energies Authors: BIAGINI, ENRICO; M. FALCITELLI; TOGNOTTI, LEONARDO;handle: 11568/136384
The devolatilization of solid fuels is of crucial importance for all thermochemical processes and is the basic step in gasification and combustion models. Here a structural model is developed to provide an Advanced tool for Biomass and Coal Devolatilization (ABCD model), even in blend. The main features are founded on the original approach of the CPD (Chemical Percolation Devolatilization) model by Fletcher [1]. The ABCD model extends the approach also to biomass fuels. Further improvements of the ABCD model are: (i) a population balance between nmers in liquid metaplast; (ii) elemental balance closure with the speciation of light gases, heterospecies and tar composition; (iii) introduction of secondary reactions of tarcracking and crosslinking. The ABCD model results agree with a selection of experimental data (from homemade and literature works) on different biomasses. The results reported in this paper encouraged IFRF in continuing the experimental campaign for the validation of the model by extending the Solid Fuel DataBase SFDB. The inclusion of ABCD in comprehensive codes (e.g., Reactor Network Analysis, RNA [2]) and process models is valuable because it gives detailed distribution of pyrolysis products in a wide range of conditions with a low computational cost. Proceedings of the 18th European Biomass Conference and Exhibition, 3-7 May 2010, Lyon, France, pp. 923-930
Archivio della Ricer... arrow_drop_down Archivio della Ricerca - Università di PisaConference object . 2010Data sources: Archivio della Ricerca - Università di Pisaadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eu1 citations 1 popularity Average influence Average impulse Average Powered by BIP!
more_vert Archivio della Ricer... arrow_drop_down Archivio della Ricerca - Università di PisaConference object . 2010Data sources: Archivio della Ricerca - Università di Pisaadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Conference object , Other literature type 2010 ItalyPublisher:ETA-Florence Renewable Energies Authors: BIAGINI, ENRICO; M. FALCITELLI; TOGNOTTI, LEONARDO;handle: 11568/136384
The devolatilization of solid fuels is of crucial importance for all thermochemical processes and is the basic step in gasification and combustion models. Here a structural model is developed to provide an Advanced tool for Biomass and Coal Devolatilization (ABCD model), even in blend. The main features are founded on the original approach of the CPD (Chemical Percolation Devolatilization) model by Fletcher [1]. The ABCD model extends the approach also to biomass fuels. Further improvements of the ABCD model are: (i) a population balance between nmers in liquid metaplast; (ii) elemental balance closure with the speciation of light gases, heterospecies and tar composition; (iii) introduction of secondary reactions of tarcracking and crosslinking. The ABCD model results agree with a selection of experimental data (from homemade and literature works) on different biomasses. The results reported in this paper encouraged IFRF in continuing the experimental campaign for the validation of the model by extending the Solid Fuel DataBase SFDB. The inclusion of ABCD in comprehensive codes (e.g., Reactor Network Analysis, RNA [2]) and process models is valuable because it gives detailed distribution of pyrolysis products in a wide range of conditions with a low computational cost. Proceedings of the 18th European Biomass Conference and Exhibition, 3-7 May 2010, Lyon, France, pp. 923-930
Archivio della Ricer... arrow_drop_down Archivio della Ricerca - Università di PisaConference object . 2010Data sources: Archivio della Ricerca - Università di Pisaadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis , Thesis 2007Embargo end date: 14 Jun 2007 ItalyPublisher:Universität Stuttgart Authors: Hartmann, Gabriele Maria;doi: 10.18419/opus-260
Der prognostizierte Klimawandel wird auch den Wasserkreislauf beeinflussen. Das Ausmaß dieser Änderung frühzeitig zu bestimmen ist eine wichtige Aufgabe, da sie Grundlage notwendiger Entscheidungen ist. Dieses Ausmaß hängt allerdings stark von der Datenlage und den Methoden ab, mit denen an diese Aufgabe herangegangen wird. Selbst wenn die derzeit verwendeten Methoden stimmige Ergebnisse für den gegenwärtigen Klimazustand liefern, kann nicht davon ausgegangen werden, dass die mit diesen Methoden berechneten Ergebnisse auch für ein geändertes Klima Gültigkeit haben werden. Die Unsicherheiten der Vorhersagen sind teils meteorologischer, teils hydrologischer Herkunft. Während die Unsicherheiten der GCMs bereits bekannt und in der Diskussion sind, wurden die in diesem Kontext existierenden Probleme der hydrologischen Modelle bisher nur selten untersucht. Insbesondere die Unsicherheit in der Prozessbeschreibung innerhalb der hydrologischen Modelle muss genauer geprüft werden. In dieser Dissertation wurden verschiedene Beschreibungen des Evapotranspirationsprozesses (ET) untersucht, denn dieser Prozess wird durch den Klimawandel stark beeinflusst werden. Neun verschiedene ET-Modelle wurden ausgewählt und getestet. Anhand einer einfachen theoretischen Untersuchung zeigte sich, dass die ET-Modelle bereits auf eine geringfügige Änderung von nur einer Eingangsvariablen sehr unterschiedlich reagieren. Fraglich ist nun, wie sich die durch diese Modelle berechnete ET verändert, wenn die gesamten durch den Klimawandel hervorgerufenen Änderungen der Eingangsgrößen berücksichtigt werden. Dazu wurde ein auf dem HBV-Konzept basierendes räumlich verteiltes hydrologisches Modell aufgestellt und mit den aus den verschiedenen ET-Modellen resultierenden Ergebnissen als Input nacheinander gespeist. Die Modellierung wurde auf das Einzugsgebiet des Oberen Neckars (ca. 4000 km2) angewandt. Das Einzugsgebiet wurde in 13 Teileinzugsgebiete mit deutlichen Unterschieden eingeteilt. Die verschiedenen ET-Modelle wurden getestet, indem das hydrologische Modell auf klimatisch verschiedene Jahre geeicht und dann auf klimatisch entgegengesetzte Jahre ausgewertet wurde. Dazu wurden verschiedene Zeitreihen mit jeweils 10 klimatisch ähnlichen Jahren (10 kalte, 10 warme, 10 nasse und 10 trockene Jahre aus der Zeitreihe 1961-1990) zusammengestellt. Das hydrologische Modell wurde auf jeweils eine dieser Zeitreihen geeicht und anschließend folgendermaßen validiert. Im ersten Schritt wurde das Modell für dieselbe Zeitreihe ausgewertet, die auch für die Eichung verwendet worden war. Danach erfolgte die Auswertung auf die klimatisch entgegengesetzte Zeitreihe, beispielsweise wurde das Modell, dass auf die kalten Jahre geeicht worden war, nun hinsichtlich der erzielten Ergebnisse für die warmen Jahre untersucht. Eine geringe Abweichung der beiden Ergebnisse bedeutet eine gute Übertragbarkeit des Modells. Indem das Modell auch auf die kontinuierliche Zeitreihe 1991–2000 angewandt wurde, wurde die Übertragbarkeit zusätzlich getestet. Die Kalibrierung eines hydrologischen Modells, das den Einfluss eines Klimawandels bestimmen soll, stellt eine besondere Herausforderung dar - nicht nur bei der Auswahl von geeigneten Perioden für die Kalibrierung und die Validierung, sondern auch bei der Aufstellung einer geeigneten Zielfunktion. Eine gängige Zielfunktion ist die Nash-Sutcliffe-Effizienz. Die Güte des Modells wird dabei durch den Vergleich berechneter Werte mit beobachteten Werten ermittelt. Dieser Vergleich wird meist anhand von Tageswerten durchgeführt, was zu unerkannten systematischen Fehlern führen kann. In dem hier gewählten Ansatz wird ein auf Simulated-Annealing basierender Optimierungsalgorithmus vorgestellt, der zur Kalibrierung nicht nur Tageswerte, sondern zusätzlich auch Jahres- und Extremwerte in unterschiedlichen Kombinationen verwendet. Welche Kalibrierung sich am besten zur Bestimmung der Auswirkungen von Klimaänderungen eignet, wurde durch einen umfangreichen Vergleich der Ergebnisse festgestellt. Auch dabei wurden wieder unterschiedliche Zeitskalen verwendet: die Ergebnisse wurden nicht nur auf Tagesbasis ausgewertet, sondern auch zu Wochen, Monaten, Jahreszeiten, Halbjahren und ganzen Jahren aggregiert. Die Ergebnisse zeigen, dass einige der ET-Modelle, die unter den gegenwärtigen Klimabedingungen realistische Werte berechnen, dies bei geänderten Klimabedingungen nicht mehr vermögen. Weiterhin hat sich gezeigt, dass eine nur auf Tageswerten basierende Kalibrierung zu unzureichenden Ergebnissen bei der Übertragung der Modelle zwischen klimatisch unterschiedlich ausgeprägten Zeitreihen führt. Der Einsatz einer Zielfunktion, die sowohl Tageswerte als auch Jahresaggregationen der Tageswerte berücksichtigt, hat sich hingegen bewährt. Climate change (CC) will impact water resources. Assessing the extent of these impacts in due time is an important task, as it forms the basis for decision making. Unfortunately, the extent of this forecasted impact depends very much on data and tools used for this task. Although such methods might work well with present climatic conditions, it has to be doubted whether their results can still be relied upon in a changed climate. The uncertainties in the forecasts are partly of meteorological and partly of hydrological origin. Whereas the uncertainties of GCMs are well known and often discussed, the problems of hydrological models in this context are seldom investigated. In particular the uncertainty in process representation within the hydrological models must be revised. This dissertation focuses on the representation of the evapotranspiration (ET) process, because this process will be strongly influenced by CC. For this purpose, the suitability of nine different ET models was investigated. In a theoretical investigation, the sensitivity of the ET models to only a small change in temperature was found to be very different. Thus the question had to be raised as to how the resulting ET from these models will change with the entire predicted CC. Therefore a spatially distributed hydrological model based on the HBV concept was set up and the results of the different ET models were used consecutively as input to the hydrological model. The modelling was applied on the Upper Neckar catchment, a mesoscale river in southwestern Germany with a basin size of about 4,000 km2. This catchment was divided into 13 subcatchments with different subcatchment characteristics. The suitability of the different ET approaches was checked by calibrating the hydrological model on different climatic periods and then applying the model on other climatic periods. Thus, different 10-year periods with different climatic conditions were compiled: 10 cold, 10 warm, 10 wet and 10 dry years from the time series 1961–1990 were collected. The first step was to adapt the model to the same period it was calibrated to. Then the model was applied to other 10 years, i.e. the model calibrated on for example, the cold years was used on the warm years. The transferability was also checked by applying the models on the period 1991–2000. For the investigation of the impact of CC, the calibration of the model must meet special requirements. Apart from the selection of proper periods for calibration and validation, this also concerns the establishment of a suitable objective function. Such a function is the Nash Sutcliffe efficiency. Usually it is calculated comparing observed and modelled daily values. In this study it is shown that problems in the transfer from one climatic condition to the other cannot be detected on the base of daily values. Therefore parameter sets were optimized by an automatic calibration procedure based on Simulated Annealing, which considered the model performance on different time scales simultaneously (days up to years). As the results show, some of the ET models, which work well under stationary conditions, are not able to reproduce changes in a realistic manner. The results also show that calibrating a hydrological model that is supposed to handle short as well as long term signals becomes an important task; the objective function especially has to be chosen very carefully.
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For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Doctoral thesis , Thesis 2007Embargo end date: 14 Jun 2007 ItalyPublisher:Universität Stuttgart Authors: Hartmann, Gabriele Maria;doi: 10.18419/opus-260
Der prognostizierte Klimawandel wird auch den Wasserkreislauf beeinflussen. Das Ausmaß dieser Änderung frühzeitig zu bestimmen ist eine wichtige Aufgabe, da sie Grundlage notwendiger Entscheidungen ist. Dieses Ausmaß hängt allerdings stark von der Datenlage und den Methoden ab, mit denen an diese Aufgabe herangegangen wird. Selbst wenn die derzeit verwendeten Methoden stimmige Ergebnisse für den gegenwärtigen Klimazustand liefern, kann nicht davon ausgegangen werden, dass die mit diesen Methoden berechneten Ergebnisse auch für ein geändertes Klima Gültigkeit haben werden. Die Unsicherheiten der Vorhersagen sind teils meteorologischer, teils hydrologischer Herkunft. Während die Unsicherheiten der GCMs bereits bekannt und in der Diskussion sind, wurden die in diesem Kontext existierenden Probleme der hydrologischen Modelle bisher nur selten untersucht. Insbesondere die Unsicherheit in der Prozessbeschreibung innerhalb der hydrologischen Modelle muss genauer geprüft werden. In dieser Dissertation wurden verschiedene Beschreibungen des Evapotranspirationsprozesses (ET) untersucht, denn dieser Prozess wird durch den Klimawandel stark beeinflusst werden. Neun verschiedene ET-Modelle wurden ausgewählt und getestet. Anhand einer einfachen theoretischen Untersuchung zeigte sich, dass die ET-Modelle bereits auf eine geringfügige Änderung von nur einer Eingangsvariablen sehr unterschiedlich reagieren. Fraglich ist nun, wie sich die durch diese Modelle berechnete ET verändert, wenn die gesamten durch den Klimawandel hervorgerufenen Änderungen der Eingangsgrößen berücksichtigt werden. Dazu wurde ein auf dem HBV-Konzept basierendes räumlich verteiltes hydrologisches Modell aufgestellt und mit den aus den verschiedenen ET-Modellen resultierenden Ergebnissen als Input nacheinander gespeist. Die Modellierung wurde auf das Einzugsgebiet des Oberen Neckars (ca. 4000 km2) angewandt. Das Einzugsgebiet wurde in 13 Teileinzugsgebiete mit deutlichen Unterschieden eingeteilt. Die verschiedenen ET-Modelle wurden getestet, indem das hydrologische Modell auf klimatisch verschiedene Jahre geeicht und dann auf klimatisch entgegengesetzte Jahre ausgewertet wurde. Dazu wurden verschiedene Zeitreihen mit jeweils 10 klimatisch ähnlichen Jahren (10 kalte, 10 warme, 10 nasse und 10 trockene Jahre aus der Zeitreihe 1961-1990) zusammengestellt. Das hydrologische Modell wurde auf jeweils eine dieser Zeitreihen geeicht und anschließend folgendermaßen validiert. Im ersten Schritt wurde das Modell für dieselbe Zeitreihe ausgewertet, die auch für die Eichung verwendet worden war. Danach erfolgte die Auswertung auf die klimatisch entgegengesetzte Zeitreihe, beispielsweise wurde das Modell, dass auf die kalten Jahre geeicht worden war, nun hinsichtlich der erzielten Ergebnisse für die warmen Jahre untersucht. Eine geringe Abweichung der beiden Ergebnisse bedeutet eine gute Übertragbarkeit des Modells. Indem das Modell auch auf die kontinuierliche Zeitreihe 1991–2000 angewandt wurde, wurde die Übertragbarkeit zusätzlich getestet. Die Kalibrierung eines hydrologischen Modells, das den Einfluss eines Klimawandels bestimmen soll, stellt eine besondere Herausforderung dar - nicht nur bei der Auswahl von geeigneten Perioden für die Kalibrierung und die Validierung, sondern auch bei der Aufstellung einer geeigneten Zielfunktion. Eine gängige Zielfunktion ist die Nash-Sutcliffe-Effizienz. Die Güte des Modells wird dabei durch den Vergleich berechneter Werte mit beobachteten Werten ermittelt. Dieser Vergleich wird meist anhand von Tageswerten durchgeführt, was zu unerkannten systematischen Fehlern führen kann. In dem hier gewählten Ansatz wird ein auf Simulated-Annealing basierender Optimierungsalgorithmus vorgestellt, der zur Kalibrierung nicht nur Tageswerte, sondern zusätzlich auch Jahres- und Extremwerte in unterschiedlichen Kombinationen verwendet. Welche Kalibrierung sich am besten zur Bestimmung der Auswirkungen von Klimaänderungen eignet, wurde durch einen umfangreichen Vergleich der Ergebnisse festgestellt. Auch dabei wurden wieder unterschiedliche Zeitskalen verwendet: die Ergebnisse wurden nicht nur auf Tagesbasis ausgewertet, sondern auch zu Wochen, Monaten, Jahreszeiten, Halbjahren und ganzen Jahren aggregiert. Die Ergebnisse zeigen, dass einige der ET-Modelle, die unter den gegenwärtigen Klimabedingungen realistische Werte berechnen, dies bei geänderten Klimabedingungen nicht mehr vermögen. Weiterhin hat sich gezeigt, dass eine nur auf Tageswerten basierende Kalibrierung zu unzureichenden Ergebnissen bei der Übertragung der Modelle zwischen klimatisch unterschiedlich ausgeprägten Zeitreihen führt. Der Einsatz einer Zielfunktion, die sowohl Tageswerte als auch Jahresaggregationen der Tageswerte berücksichtigt, hat sich hingegen bewährt. Climate change (CC) will impact water resources. Assessing the extent of these impacts in due time is an important task, as it forms the basis for decision making. Unfortunately, the extent of this forecasted impact depends very much on data and tools used for this task. Although such methods might work well with present climatic conditions, it has to be doubted whether their results can still be relied upon in a changed climate. The uncertainties in the forecasts are partly of meteorological and partly of hydrological origin. Whereas the uncertainties of GCMs are well known and often discussed, the problems of hydrological models in this context are seldom investigated. In particular the uncertainty in process representation within the hydrological models must be revised. This dissertation focuses on the representation of the evapotranspiration (ET) process, because this process will be strongly influenced by CC. For this purpose, the suitability of nine different ET models was investigated. In a theoretical investigation, the sensitivity of the ET models to only a small change in temperature was found to be very different. Thus the question had to be raised as to how the resulting ET from these models will change with the entire predicted CC. Therefore a spatially distributed hydrological model based on the HBV concept was set up and the results of the different ET models were used consecutively as input to the hydrological model. The modelling was applied on the Upper Neckar catchment, a mesoscale river in southwestern Germany with a basin size of about 4,000 km2. This catchment was divided into 13 subcatchments with different subcatchment characteristics. The suitability of the different ET approaches was checked by calibrating the hydrological model on different climatic periods and then applying the model on other climatic periods. Thus, different 10-year periods with different climatic conditions were compiled: 10 cold, 10 warm, 10 wet and 10 dry years from the time series 1961–1990 were collected. The first step was to adapt the model to the same period it was calibrated to. Then the model was applied to other 10 years, i.e. the model calibrated on for example, the cold years was used on the warm years. The transferability was also checked by applying the models on the period 1991–2000. For the investigation of the impact of CC, the calibration of the model must meet special requirements. Apart from the selection of proper periods for calibration and validation, this also concerns the establishment of a suitable objective function. Such a function is the Nash Sutcliffe efficiency. Usually it is calculated comparing observed and modelled daily values. In this study it is shown that problems in the transfer from one climatic condition to the other cannot be detected on the base of daily values. Therefore parameter sets were optimized by an automatic calibration procedure based on Simulated Annealing, which considered the model performance on different time scales simultaneously (days up to years). As the results show, some of the ET models, which work well under stationary conditions, are not able to reproduce changes in a realistic manner. The results also show that calibrating a hydrological model that is supposed to handle short as well as long term signals becomes an important task; the objective function especially has to be chosen very carefully.
Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2007Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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For further information contact us at helpdesk@openaire.euAccess RoutesGreen 5 citations 5 popularity Average influence Average impulse Average Powered by BIP!
more_vert Hochschulschriftense... arrow_drop_down Hochschulschriftenserver der Universität StuttgartDoctoral thesisData sources: Hochschulschriftenserver der Universität StuttgartOnline Publikationen der Universität StuttgartDoctoral thesis . 2007Data sources: Online Publikationen der Universität Stuttgartadd ClaimPlease grant OpenAIRE to access and update your ORCID works.This Research product is the result of merged Research products in OpenAIRE.
You have already added works in your ORCID record related to the merged Research product.This Research product is the result of merged Research products in OpenAIRE.
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