Document Detail


Development of a novel three-stage fermentation system converting food waste to hydrogen and methane.
MedLine Citation:
PMID:  23131651     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
In this study, a novel three-stage (lactate-+photo-H(2)+CH(4)) fermentation system was developed, which converts food waste to H(2) and CH(4), with an emphasis on achieving high H(2) yield. The system begins by first fermenting food waste to lactate, rather than acetate and butyrate, using indigenous lactic acid bacteria. Lactate fermentation effluent was then centrifuged, and the supernatant was used for H(2) production by photo-fermentation, while the residue was used for CH(4) production by anaerobic digestion. Overall, via the three-stage fermentation system, 41% and 37% of the energy content in the food waste was converted to H(2) and CH(4), respectively, corresponding to the electrical energy yield of 1146MJ/ton-food waste, which is 1.4 times higher value than that of previous two-stage dark (H(2)+CH(4)) fermentation system. The H(2) yield based on hexose input was 8.35mol H(2)/mol hexose(added), the highest value ever reported from actual organic waste.
Authors:
Dong-Hoon Kim; Mi-Sun Kim
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-2
Journal Detail:
Title:  Bioresource technology     Volume:  127C     ISSN:  1873-2976     ISO Abbreviation:  Bioresour. Technol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-11-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9889523     Medline TA:  Bioresour Technol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  267-274     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier Ltd. All rights reserved.
Affiliation:
Clean Fuel Department, Korea Institute of Energy Research, 102 Gajeong-ro, Yuseong-gu, Daejeon 305-343, Republic of Korea.
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