| Uncoupling of liquid and solid retention times in anaerobic digestion of catering wastes. | |
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MedLine Citation:
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PMID: 19001711 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Source-separated food wastes collected from a university campus catering facility were processed in bench-scale anaerobic digesters. The feedstock contained a varied mix of fruits, vegetables, meats and fried foods. Two modes of digestion were compared. The first was hydraulic flush (HF) mode, in which liquids were flushed through the reactor on a retention time of 25 days while solids were maintained on an extended retention time of over 150 days. The converse was a solids wastage (SW) mode, in which liquid retention time was over 150 days, and solids were wasted to maintain a retention time of 25 days. SW reactors exhibited methanogenic failure after approximately 45 days. HF reactors, in contrast, maintained stable digestion for a period of 100 days, and were robust enough to recover from a thermal shock applied over a three-day period in which the temperature was increased from 35 degrees C to 50 degrees C between days 105-108 of the experiment. Stable operation was regained by day 139 and continued until the end of the run on day 150. |
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Authors:
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M A Climenhaga; C J Banks |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Water science and technology : a journal of the International Association on Water Pollution Research Volume: 58 ISSN: 0273-1223 ISO Abbreviation: Water Sci. Technol. Publication Date: 2008 |
Date Detail:
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Created Date: 2008-11-12 Completed Date: 2009-01-23 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9879497 Medline TA: Water Sci Technol Country: England |
Other Details:
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Languages: eng Pagination: 1581-7 Citation Subset: IM |
Copyright Information:
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IWA Publishing 2008. |
Affiliation:
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School of Civil Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK. mac2@soton.ac.uk |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Anaerobiosis* Refuse Disposal / methods* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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