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description Publicationkeyboard_double_arrow_right Article , Journal 2018Publisher:Elsevier BV Authors:Elena Surra;
Elena Surra
Elena Surra in OpenAIREMaria Bernardo;
Maria Bernardo
Maria Bernardo in OpenAIRENuno Lapa;
Nuno Lapa
Nuno Lapa in OpenAIREIsabel Esteves;
+2 AuthorsIsabel Esteves
Isabel Esteves in OpenAIREElena Surra;
Elena Surra
Elena Surra in OpenAIREMaria Bernardo;
Maria Bernardo
Maria Bernardo in OpenAIRENuno Lapa;
Nuno Lapa
Nuno Lapa in OpenAIREIsabel Esteves;
Isabel Fonseca;Isabel Esteves
Isabel Esteves in OpenAIREJosé Paulo Mota;
José Paulo Mota
José Paulo Mota in OpenAIREpmid: 29169860
In the present work, the enhancement of biogas and methane yields through anaerobic co-digestion of the pre-hydrolised Organic Fraction of Municipal Solid Wastes (hOFMSW) and Maize Cob Wastes (MCW) in a lab-scale thermophilic anaerobic reactor was tested. In order to increase its biodegradability, MCW were submitted to an initial pre-treatment screening phase as follows: (i) microwave (MW) irradiation catalysed by NaOH, (ii) MW catalysed by glycerol in water and alkaline water solutions, (iii) MW catalysed by H2O2 with pH of 9.8 and (iv) chemical pre-treatment at room temperature catalysed by H2O2 with 4 h reaction time. The pre-treatments cataysed by H2O2 were performed with 2% MCW (wMCW/v alkaline water) at ratios of 0.125, 0.25, 0.5 and 1.0 (wH2O2/wMCW). The pre-treatment that presented the most favourable balance between sugars, lignin, cellulose and hemicellulose solubilisations, as well as low production of phenolic compound and furfural (inhibitors), was the chemical pre-treatment catalysed by H2O2, at room temperature, with a ratio of 0.5 wH2O2/wMCW (Pre1). This Pre1 was then optimised testing reaction times of 1, 2 and 3 days at a different pH (11.5) and MCW percentage (10% w/v). The optimised pre-treatment that presented the best results, considering the same criteria defined above, was the one carried out during 3 days, at pH 9.8 and 10% MCW w/v (Pre2). The anaerobic reactor was initially fed with the hOFMSW obtained from the hydrolysis tank of an industrial AD plant. The hOFMSW was than co-digested with MCW submitted to the pre-treatment Pre1. In another assay, hOFMSW was co-digested with MCW submitted pre-treatment Pre 2. The co-digestion of hOFMSW + Pre1 increased the biogas yield by 38.9% and methane yield by 29.7%, when compared to the results obtained with hOFMSW alone. The co-digestion of hOFMSW + Pre2 increased biogas yield by 46.0% and CH4 yield by 36.3%. In both cases, the methane content obtained in the biogas streams was above 66% v/v. These results show that pre-treatment with H2O2, at room temperature, is a promising low cost way to valorize MCW through co-digestion with hOFMSW.
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=10.1016/j.wasman.2017.11.004&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 26 citations 26 popularity Top 10% influence Top 10% impulse Top 10% 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=10.1016/j.wasman.2017.11.004&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2021 PortugalPublisher:MDPI AG Authors:Elena Surra;
Elena Surra
Elena Surra in OpenAIREManuela Correia;
Manuela Correia
Manuela Correia in OpenAIRESónia Figueiredo;
Sónia Figueiredo
Sónia Figueiredo in OpenAIREJaime Gabriel Silva;
+6 AuthorsJaime Gabriel Silva
Jaime Gabriel Silva in OpenAIREElena Surra;
Elena Surra
Elena Surra in OpenAIREManuela Correia;
Manuela Correia
Manuela Correia in OpenAIRESónia Figueiredo;
Sónia Figueiredo
Sónia Figueiredo in OpenAIREJaime Gabriel Silva;
Joana Vieira;Jaime Gabriel Silva
Jaime Gabriel Silva in OpenAIRESandra Jorge;
Sandra Jorge
Sandra Jorge in OpenAIREMarta Pazos;
Marta Pazos
Marta Pazos in OpenAIREMaria Ángeles Sanromán;
Maria Ángeles Sanromán
Maria Ángeles Sanromán in OpenAIRENuno Lapa;
Nuno Lapa
Nuno Lapa in OpenAIRECristina Delerue-Matos;
Cristina Delerue-Matos
Cristina Delerue-Matos in OpenAIREdoi: 10.3390/su13073669
Several pesticides and pharmaceuticals (PP) have been detected in the effluent of a full-scale Portuguese Wastewater Treatment Plant (WWTP). Their presence contributed to the environmental burdens associated with the existing treatment of the Municipal Wastewater (MWW) in the impact categories of Human Carcinogenicity, Non-Carcinogenicity, and Freshwater toxicities on average by 85%, 60%, and 90%, respectively (ReciPe2016 and USEtox methods). The environmental and economic assessment of the installation of an Anodic Oxidation (AO) unit for PPs’ removal was performed through Life Cycle and Economic Analysis, considering two types of anodes, the Boron-Doped Diamond (BDD) and the Mixed Metal Oxides (MMO). The operation of the AO unit increased the environmental burdens of the system by 95% on average (USEtox), but these impacts can be partially compensated by the avoided the production of non-renewable energy in the Portuguese electricity mix by biogas cogeneration at the WWTP. If the construction of the AO unit and the manufacturing of the electrodes are considered, the Human and Freshwater Toxicities are often higher than the environmental benefits derived from the PPs’ removal. On the economic side, the MMO configuration is clearly more advantageous, whereas BDD is environmentally more favorable. The issue of the presence of PP in MWW effluents has to be addressed as an integrated solution both improving upstream PP’s management and adopting PP’s removal technologies strongly supported by renewable energies. Further insights are needed for the assessment of fate and of the environmental effects of PP in the sludge.
Sustainability arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAArticle . 2021License: CC BYData sources: Recolector de Ciencia Abierta, RECOLECTARepositório da Universidade Nova de LisboaArticle . 2021Data sources: Repositório da Universidade Nova de Lisboaadd 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=10.3390/su13073669&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 11 citations 11 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
visibility 78visibility views 78 download downloads 101 Powered bymore_vert Sustainability arrow_drop_down Recolector de Ciencia Abierta, RECOLECTAArticle . 2021License: CC BYData sources: Recolector de Ciencia Abierta, RECOLECTARepositório da Universidade Nova de LisboaArticle . 2021Data sources: Repositório da Universidade Nova de Lisboaadd 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=10.3390/su13073669&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2019Publisher:Elsevier BV Authors:Elena Surra;
Elena Surra
Elena Surra in OpenAIREMaria Bernardo;
Maria Bernardo
Maria Bernardo in OpenAIRENuno Lapa;
Nuno Lapa
Nuno Lapa in OpenAIREIsabel A.A.C. Esteves;
+2 AuthorsIsabel A.A.C. Esteves
Isabel A.A.C. Esteves in OpenAIREElena Surra;
Elena Surra
Elena Surra in OpenAIREMaria Bernardo;
Maria Bernardo
Maria Bernardo in OpenAIRENuno Lapa;
Nuno Lapa
Nuno Lapa in OpenAIREIsabel A.A.C. Esteves;
Isabel Fonseca;Isabel A.A.C. Esteves
Isabel A.A.C. Esteves in OpenAIREJosé P.B. Mota;
José P.B. Mota
José P.B. Mota in OpenAIREpmid: 31419673
Maize Cob Waste (MCW) is available worldwide in high amounts, as maize is the most produced cereal in the world. MCW is generally left in the crop fields, but due to its low biodegradability it has a negligible impact in soil fertility. Moreover, MCW can be used as substrate to balance the C/N ratio during the Anaerobic co-Digestion (AcoD) with other biodegradable substrates, and is an excellent precursor for the production of Activated Carbons (ACs). In this context, a biorefinery is theoretically discussed in the present review, based on the idea that MCW, after proper pre-treatment is valorised as precursor of ACs and as co-substrate in AcoD for biomethane generation. This paper provides an overview on different scientific and technological aspects that can be involved in the development of the proposed biorefinery; the major topics considered in this work are the following ones: (i) the most suitable pre-treatments of MCW prior to AcoD; (ii) AcoD process with regard to the critical parameters resulting from MCW pre-treatments; (iii) production of ACs using MCW as precursor, with the aim to use these ACs in biogas conditioning (H2S removal) and upgrading (biomethane production), and (iv) an overview on biogas upgrading technologies.
Journal of Environme... arrow_drop_down Journal of Environmental ManagementArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd 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=10.1016/j.jenvman.2019.109351&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesbronze 24 citations 24 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Journal of Environme... arrow_drop_down Journal of Environmental ManagementArticle . 2019 . Peer-reviewedLicense: Elsevier TDMData sources: Crossrefadd 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=10.1016/j.jenvman.2019.109351&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu