| Performance of heterogeneous ZrO2 supported metaloxide catalysts for brown grease esterification and sulfur removal. | |
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MedLine Citation:
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PMID: 21078551 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
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In order to achieve a viable biodiesel industry, new catalyst technology is needed which can process a variety of less expensive waste oils, such as yellow grease and brown grease. However, for these catalysts to be effective for biodiesel production using these feedstocks, they must be able to tolerate higher concentrations of free fatty acids (FFA), water, and sulfur. We have developed a class of zirconia supported metaloxide catalysts that achieve high FAME yields through esterification of FFAs while simultaneously performing desulfurization and de-metallization functions. In fact, methanolysis, with the zirconia supported catalysts, was more effective for desulfurization than an acid washing process. In addition, using zirconia supported catalysts to convert waste grease, high in sulfur content, resulted in a FAME product that could meet the in-use ASTM diesel fuel sulfur specification (<500 ppm). Possible mechanisms of desulfurization and de-metallization by methanolysis were proposed to explain this activity. |
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Authors:
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Manhoe Kim; Craig DiMaggio; Shuli Yan; Huali Wang; Steven O Salley; K Y Simon Ng |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. Date: 2010-10-30 |
Journal Detail:
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Title: Bioresource technology Volume: 102 ISSN: 1873-2976 ISO Abbreviation: Bioresour. Technol. Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: England |
Other Details:
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Languages: eng Pagination: 2380-6 Citation Subset: IM |
Copyright Information:
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Copyright © 2010 Elsevier Ltd. All rights reserved. |
Affiliation:
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National Biofuels Energy Laboratory, Next Energy, USA. |
Export Citation:
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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