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description Publicationkeyboard_double_arrow_right Article , Journal 2021 Australia, GermanyPublisher:Elsevier BV Authors:Alireza Taghipour;
Alireza Taghipour
Alireza Taghipour in OpenAIREUrsel Hornung;
Ursel Hornung
Ursel Hornung in OpenAIREJerome Atillo Ramirez;
Jerome Atillo Ramirez
Jerome Atillo Ramirez in OpenAIRERichard John Brown;
+1 AuthorsRichard John Brown
Richard John Brown in OpenAIREAlireza Taghipour;
Alireza Taghipour
Alireza Taghipour in OpenAIREUrsel Hornung;
Ursel Hornung
Ursel Hornung in OpenAIREJerome Atillo Ramirez;
Jerome Atillo Ramirez
Jerome Atillo Ramirez in OpenAIRERichard John Brown;
Thomas James Rainey;Richard John Brown
Richard John Brown in OpenAIREAbstract Generating green-based liquid fuels using hydrothermal liquefaction is a promising method for fossil fuel replacement. This study investigates the impact of recycling the aqueous phase in hydrothermal liquefaction processing on fuel yield, quality and energy efficiency using algae as the feedstock. Recycling the aqueous phase in algal hydrothermal liquefaction increased biocrude production yield by 18.9% at 350 °C, although a 12.2% increase in the biocrude nitrogen content was observed. In the second recycling, the nitrogen content increased to 17.6%, which is not environmentally favourable for direct usage in diesel engines due to the possible increase in Nitrogen Oxides (NOx) emissions. Recycling the aqueous phase in Spirulina Platensis feedstock liquefaction led to a 19–30% increase in yields for different recycling numbers, which was influenced by increasing the temperature and by applying catalysts. The heterogeneous catalyst showed a considerable increase (17.8%) in yield, a decrease (9.5%) in nitrogen content, and an improved energy consumption recovery by 30.8% after single recycling. However, a slight increase (2.7%) in nitrogen content was observed after recycling twice. It is vital to reduce the amount of energy used in the hydrothermal liquefaction process to be comparable with conventional fuels. Recycling the aqueous phase reduced the energy usage considerably. Applying the homogeneous catalyst and recycling the aqueous phase twice had the highest energy efficiency (36.8%) and production yield (51.4%) for the hydrothermal liquefaction process. The generated aqueous phase in single and double recycling experiments had up to 77% and 166% more phosphate, which may be of interest for agricultural applications.
Queensland Universit... arrow_drop_down Queensland University of Technology: QUT ePrintsArticle . 2021License: CC BY NC NDData sources: Bielefeld Academic Search Engine (BASE)KITopen (Karlsruhe Institute of Technologie)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)Journal of Cleaner ProductionArticle . 2021 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefKITopen (Karlsruhe Institute of Technologie)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)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.jclepro.2020.125582&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 27 citations 27 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert Queensland Universit... arrow_drop_down Queensland University of Technology: QUT ePrintsArticle . 2021License: CC BY NC NDData sources: Bielefeld Academic Search Engine (BASE)KITopen (Karlsruhe Institute of Technologie)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)Journal of Cleaner ProductionArticle . 2021 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefKITopen (Karlsruhe Institute of Technologie)Article . 2021Data sources: Bielefeld Academic Search Engine (BASE)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.jclepro.2020.125582&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Part of book or chapter of book , Other literature type 2020Publisher:IntechOpen La lignine, la deuxième plus grande biomasse après la cellulose, est sous-utilisée.Et pourtant, elle reste la seule source naturelle de composés aromatiques et phénoliques.Il est impératif, au milieu de l'intérêt croissant pour la conversion de la biomasse, d'accorder l'attention nécessaire à la dégradation de la lignine en produits chimiques à valeur ajoutée.Spécifiquement, ses dérivés phénylés, gaïacylés et syringylés.Comprendre la chimie de la dégradation de la lignine, contribue grandement à sa valorisation sélective en carburants et produits chimiques par des voies thermochimiques telles que la liquéfaction hydrothermale (HTL).Par conséquent, le développement de technologies ciblant la valeur ajoutée des produits et les sous-produits de la lignine céderaient sans aucun doute la place aux marchés émergents de l'industrie. Les documents de synthèse précédents se sont concentrés sur le HTL général de la biomasse, des déchets alimentaires, des algues et de leurs composés modèles. Cependant, l'examen du HTL de la lignine est à peine disponible. Ce document présente les analyses détaillées de la littérature sur la tendance actuelle de la dégradation de la lignine via le HTL.L' effet des conditions du HTL, y compris la température, la vitesse de chauffage et le catalyseur, a été examiné. Une discussion approfondie sur l'utilisation de liquides ioniques comme catalyseur pour le HTL de la lignine a également été compilée. D'autres techniques de dégradation de la lignine telles que la pyrolyse et l'hydrolyse ont également été discutés. Ceci vise à rassembler des informations à jour sur la dégradation de la lignine en intermédiaires chimiques sélectionnés. La lignina, la segunda biomasa más grande después de la celulosa, está infrautilizada. Sin embargo, sigue siendo la única fuente natural de compuestos aromáticos y fenólicos. Es imperativo, en medio del creciente interés en la conversión de biomasa, prestar la atención necesaria a la degradación de la lignina en productos químicos de valor agregado. Específicamente, sus derivados de fenilo, guayacilo y siringilo. Comprender la química de degradación de la lignina, contribuye en gran medida a su valorización selectiva en combustibles y productos químicos a través de rutas termoquímicas como la licuefacción hidrotérmica (Htl). Por lo tanto, el desarrollo de tecnologías dirigidas a la adición de valor de productos y subproductos de la lignina, sin duda darían paso a mercados emergentes en la industria. Documentos de revisión anteriores centrados en la Htl general de la biomasa, el desperdicio de alimentos, las algas y sus compuestos modelo. Sin embargo, la revisión de la Htl de la lignina apenas está disponible. Este documento presenta los análisis bibliográficos detallados de la tendencia actual en la degradación de la lignina a través de HTL.Se ha revisado el efecto de las condiciones de Htl, incluida la temperatura, la velocidad de calentamiento y el catalizador. También se ha recopilado una discusión en profundidad sobre el uso de líquidos iónicos como catalizador para la Htl de la lignina. Otras técnicas de degradación de la lignina como la pirólisis y la hidrólisis también fueron discutido. Esto tiene como objetivo reunir información actualizada sobre la degradación de la lignina en productos químicos intermedios seleccionados. Lignin, the second largest biomass after cellulose is underutilized.Yet, it remains the only natural source of aromatic, and phenolic compounds.It is imperative to, amidst the expanding interest on biomass conversion, to accord the necessary attention towards lignin degradation into value added chemicals.Specifically, its phenyl, guaiacyl, and syringyl derivatives.Understanding lignin degradation chemistry, goes a long way in its selective valorization into fuels and chemicals via thermochemical routes such as hydrothermal liquefaction (HTL).Therefore, development of technologies targeting value addition of products and by-products from lignin, would undoubtedly give way to emerging markets in the industry.Previous review papers focused on the general HTL of biomass, food waste, algae, and their model compounds.However, review on HTL of lignin is scarcely available.This paper presents the detailed literature analyses of the current trend in lignin degradation via HTL.Effect of HTL conditions including temperature, heating rate and catalyst has been reviewed.In-depth discussion on use of ionic liquids as catalyst for HTL of lignin has also been compiled.Other lignin degradation techniques such as pyrolysis and hydrolysis were also discussed.This is aimed at bringing together an up-to-date information on lignin degradation into selected chemical intermediates. اللجنين، ثاني أكبر كتلة حيوية بعد نقص استخدام السليلوز. ومع ذلك، فإنه لا يزال المصدر الطبيعي الوحيد للمركبات العطرية والفينولية. من الضروري، وسط الاهتمام المتزايد بتحويل الكتلة الحيوية، إيلاء الاهتمام اللازم نحو تحلل اللجنين إلى مواد كيميائية ذات قيمة مضافة. على وجه التحديد، مشتقاته من الفينيل والجواسيل والمحاقن. فهم كيمياء تحلل اللجنين، يقطع شوطًا طويلاً في تثمينه الانتقائي إلى وقود ومواد كيميائية عبر طرق كيميائية حرارية مثل التسييل الحراري المائي (HTL). لذلك، تطوير التقنيات التي تستهدف إضافة القيمة للمنتجات و المنتجات الثانوية من اللجنين، ستفسح المجال بلا شك للأسواق الناشئة في الصناعة. تم استعراض أوراق المراجعة السابقة التي تركز على ارتفاع ضغط الدم العام للكتلة الحيوية ونفايات الطعام والطحالب ومركباتها النموذجية. ومع ذلك، فإن المراجعة على ارتفاع ضغط الدم من اللجنين نادراً ما تكون متاحة. تقدم هذه الورقة التحليلات الأدبية التفصيلية للاتجاه الحالي في تدهور اللجنين عبر ارتفاع ضغط الدم. كما تم استعراض تأثير ظروف ارتفاع ضغط الدم بما في ذلك درجة الحرارة ومعدل التسخين والمحفز. كما تم إجراء مناقشة متعمقة حول استخدام السوائل الأيونية كمحفز لارتفاع ضغط الدم من اللجنين. كما تم تجميع تقنيات أخرى لتحلل اللجنين مثل الانحلال الحراري والتحلل المائي يهدف هذا إلى جمع معلومات محدثة حول تحلل اللجنين في مواد وسيطة كيميائية مختارة.
InTech arrow_drop_down https://doi.org/10.5772/intech...Part of book or chapter of book . 2020 . Peer-reviewedLicense: CC BYData sources: Crossrefhttps://www.intechopen.com/cit...Part of book or chapter of bookLicense: CC BYData sources: UnpayWalladd 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=10.5772/intechopen.90860&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen hybrid 6 citations 6 popularity Top 10% influence Average impulse Top 10% Powered by BIP!
more_vert InTech arrow_drop_down https://doi.org/10.5772/intech...Part of book or chapter of book . 2020 . Peer-reviewedLicense: CC BYData sources: Crossrefhttps://www.intechopen.com/cit...Part of book or chapter of bookLicense: CC BYData sources: UnpayWalladd 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=10.5772/intechopen.90860&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2015 GermanyPublisher:American Chemical Society (ACS) Authors: Blanca Ríos Gómez;Diego López Barreiro;
Diego López Barreiro
Diego López Barreiro in OpenAIREUrsel Hornung;
Ursel Hornung
Ursel Hornung in OpenAIREAndrea Kruse;
+2 AuthorsAndrea Kruse
Andrea Kruse in OpenAIREBlanca Ríos Gómez;Diego López Barreiro;
Diego López Barreiro
Diego López Barreiro in OpenAIREUrsel Hornung;
Ursel Hornung
Ursel Hornung in OpenAIREAndrea Kruse;
Andrea Kruse; Wolter Prins;Andrea Kruse
Andrea Kruse in OpenAIREThe microalgae species Nannochloropsis gaditana (N. gaditana, marine) and Scenedesmus almeriensis (S. almeriensis, freshwater) were subjected to hydrothermal liquefaction (HTL; 350 °C; residence time of 15 min) in a continuous stirred-tank reactor (190 mL) at microalgae loadings of 9.1 and 18.2 wt % in the feed. The results indicate that the high loading of biomass in the feed promotes the formation of biocrude oil, with a maximum yield of 54.8 ± 3.4 wt % for N. gaditana. A similar type of biocrude was obtained with both species. Its nitrogen and carbon contents increased at the high biomass loading, as well as the higher heating value. The HTL product yields varied from those reported for batch experiments carried out at the same reaction conditions. Most of the nutrients initially present in the feedstock were recovered to some extent in bioavailable forms in the aqueous phase, especially in the case of N. gaditana.
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=10.1021/acs.energyfuels.5b02099&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eu66 citations 66 popularity Top 1% 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=10.1021/acs.energyfuels.5b02099&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2020 GermanyPublisher:Elsevier BV Authors: Wei Zhu;Ursel Hornung;
Ursel Hornung; Chenyu Wang; +3 AuthorsUrsel Hornung
Ursel Hornung in OpenAIREWei Zhu;Ursel Hornung;
Ursel Hornung; Chenyu Wang; Chenyu Wang; Yujie Fan; Nicolaus Dahmen;Ursel Hornung
Ursel Hornung in OpenAIREAbstract Hydrothermal treatment of sewage sludge is considered to be a promising environmentally friendly technology which can transform the organic matter in sludge into clean energy. However, the char and tar produced by side reactions will inhibit reaction. Five model compounds (humic acid, glutamic acid, glycerol, guaiacol, glucose) representing the main organic components (humus, proteins, lipids, lignin, and carbohydrates) in sewage sludge were treated in an autoclave at 300–400 °C for 30 min, the influence of the organic component on char/tar formation was studied. The char yield of humic acid was highest, up to 69.8(±3.1)%, followed by glucose. The tar yield of glycerol and guaiacol was highest in subcritical water and supercritical water, respectively. To further evaluate the utilization value of char/tar or to give a reasonable strategy for char/tar inhibition, the char/tar was characterized by elemental analysis, fourier transform infrared spectroscopy, thermosgravimetric analyzer, scanning electron microscope, and gas chromatography-mass spectrometer. The char/tar arising from the different model compounds exhibit differences in properties such as calorific value, thermal stability, and surface structure, which were due to the different pathways involved in their formation. The results provide the underlying insights needed to guide follow-up treatments or utilization of the char and tar produced during hydrothermal treatment of sewage sludge.
KITopen (Karlsruhe I... arrow_drop_down KITopen (Karlsruhe Institute of Technologie)Article . 2019Data sources: Bielefeld Academic Search Engine (BASE)Journal of Cleaner ProductionArticle . 2020 . 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.jclepro.2019.118586&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen 42 citations 42 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert KITopen (Karlsruhe I... arrow_drop_down KITopen (Karlsruhe Institute of Technologie)Article . 2019Data sources: Bielefeld Academic Search Engine (BASE)Journal of Cleaner ProductionArticle . 2020 . 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.jclepro.2019.118586&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2012 GermanyPublisher:Wiley Authors: Daniel Forchheim;Ursel Hornung;
Ursel Hornung
Ursel Hornung in OpenAIREPhilipp Kempe;
Philipp Kempe
Philipp Kempe in OpenAIREAndrea Kruse;
+1 AuthorsAndrea Kruse
Andrea Kruse in OpenAIREDaniel Forchheim;Ursel Hornung;
Ursel Hornung
Ursel Hornung in OpenAIREPhilipp Kempe;
Philipp Kempe
Philipp Kempe in OpenAIREAndrea Kruse;
Andrea Kruse
Andrea Kruse in OpenAIREDavid Steinbach;
David Steinbach
David Steinbach in OpenAIRELignin forms an important part of lignocellulosic biomass and is an abundantly available residue. It is a potential renewable source of phenol. Liquefaction of enzymatic hydrolysis lignin as well as catalytical hydrodeoxygenation of the main intermediates in the degradation of lignin, that is, catechol and guaiacol, was studied. The cleavage of the ether bonds, which are abundant in the molecular structure of lignin, can be realised in near-critical water (573 to 673 K, 20 to 30 MPa). Hydrothermal treatment in this context provides high selectivity in respect to hydroxybenzenes, especially catechol. RANEY Nickel was found to be an adequate catalyst for hydrodeoxygenation. Although it does not influence the cleavage of ether bonds, RANEY Nickel favours the production of phenol from both lignin and catechol. The main product from hydrodeoxygenation of guaiacol with RANEY Nickel was cyclohexanol. Reaction mechanism and kinetics of the degradation of guaiacol were explored.
KITopen (Karlsruhe I... arrow_drop_down KITopen (Karlsruhe Institute of Technologie)Article . 2012License: CC BYData sources: Bielefeld Academic Search Engine (BASE)International Journal of Chemical EngineeringArticle . 2012 . Peer-reviewedLicense: CC BYData 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=10.1155/2012/589749&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess RoutesGreen gold 36 citations 36 popularity Top 10% influence Top 10% impulse Top 10% Powered by BIP!
more_vert KITopen (Karlsruhe I... arrow_drop_down KITopen (Karlsruhe Institute of Technologie)Article . 2012License: CC BYData sources: Bielefeld Academic Search Engine (BASE)International Journal of Chemical EngineeringArticle . 2012 . Peer-reviewedLicense: CC BYData 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=10.1155/2012/589749&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2016 GermanyPublisher:Elsevier BV Authors: Blanca Ríos Gómez; Frederik Ronsse;Ursel Hornung;
Ursel Hornung
Ursel Hornung in OpenAIREAndrea Kruse;
+3 AuthorsAndrea Kruse
Andrea Kruse in OpenAIREBlanca Ríos Gómez; Frederik Ronsse;Ursel Hornung;
Ursel Hornung
Ursel Hornung in OpenAIREAndrea Kruse;
Andrea Kruse; Wolter Prins;Andrea Kruse
Andrea Kruse in OpenAIREDiego López Barreiro;
Diego López Barreiro
Diego López Barreiro in OpenAIREAbstract This paper reviews the literature on upgrading of biocrude oil obtained by hydrothermal liquefaction of microalgae. It analyses the influence of several parameters (e.g., temperature, operation mode, reaction time, catalyst) on the yields and properties of the upgraded product. Some own experiments are performed based on the review outcomes, comparing for the first time the application of heterogeneous catalysis to biocrude oil obtained from two different algae species: Scenedesmus almeriensis (freshwater) and Nannochloropsis gaditana (marine). The conditions applied were 4 to 8 MPa hydrogen atmosphere in 10 mL microautoclaves at 400 °C and 4 h. The influence of two catalysts (Pt/Al 2 O 3 and HZSM-5) and the effect of water addition to the reaction medium were investigated. Many of the effects were found to be caused by the temperature applied, rather than by the catalyst. The conditions applied improved the quality of the algal biocrude oil, viz. by reducing its amount of heteroatoms, saturating and cracking its molecules, and increasing its volatility. The degree of upgrading to a transportation biofuel in the experiments herewith reported, as well as in the literature studies, is however still insufficient and demands further developments of the upgrading techniques .
Fuel Processing Tech... arrow_drop_down Fuel Processing TechnologyArticle . 2016 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefKITopen (Karlsruhe Institute of Technologie)Article . 2016Data sources: Bielefeld Academic Search Engine (BASE)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.fuproc.2016.02.034&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.euAccess Routesgold 84 citations 84 popularity Top 1% influence Top 10% impulse Top 1% Powered by BIP!
more_vert Fuel Processing Tech... arrow_drop_down Fuel Processing TechnologyArticle . 2016 . Peer-reviewedLicense: Elsevier TDMData sources: CrossrefKITopen (Karlsruhe Institute of Technologie)Article . 2016Data sources: Bielefeld Academic Search Engine (BASE)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.fuproc.2016.02.034&type=result"></script>'); --> </script>
For further information contact us at helpdesk@openaire.eudescription Publicationkeyboard_double_arrow_right Article , Journal 2021 GermanyPublisher:Elsevier BV Authors: Chaoyue Wu; Wei Zhu;Ursel Hornung;
Ursel Hornung; +2 AuthorsUrsel Hornung
Ursel Hornung in OpenAIREChaoyue Wu; Wei Zhu;Ursel Hornung;
Ursel Hornung; Nicolaus Dahmen;Ursel Hornung
Ursel Hornung in OpenAIREChenyu Wang;
Chenyu Wang
Chenyu Wang in OpenAIREThis study explored the feasibility of char and tar formation inhibition during supercritical water gasification of sewage sludge (SS) by additive addition. Experiments were conducted in autoclave with 5 wt% additives at 400 °C for 30 min. The non-additive gasification of SS resulted in a higher char yield (12.6%) and tar yield (16.4%). In contrast, the five additives reduced the char yield (3.4-11.2%), the inhibition of char yield by additives was in the order of NaOH > K2CO3 > H2O2 > acetic acid > NiCl2. The inhibition of tar formation was limited, tar yield were 13.3-18.8% with additives. Fourier-transform infrared spectroscopy was used to determine the functional groups of char/tar, and it was observed that the spectra of char were more similar to those of hydrochar obtained in a low-temperature experiment. Model compounds of potential precursors was also tested to study the mechanism of action of additives, the results reveal that additives have different effects on char/tar formation from various components, the inhibitory effects of additives on the yield of char from humus and tar from lignin were limited. Finally, the effects of additives on gasification were also studied. The addition of additives will have an impact on the hydrogen yield and gasification efficiency, which also needs to be considered when use additive to reduce the by-products yield.
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more_vert KITopen (Karlsruhe I... arrow_drop_down KITopen (Karlsruhe Institute of Technologie)Article . 2020License: CC BY NC NDData sources: Bielefeld Academic Search Engine (BASE)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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