Effects of base-pretreatment on continuous enriched culture for hydrogen production from food waste

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dc.contributor.authorKim, SHko
dc.contributor.authorShin, Hang-Sikko
dc.date.accessioned2013-03-07T17:05:11Z-
dc.date.available2013-03-07T17:05:11Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2008-10-
dc.identifier.citationINTERNATIONAL JOURNAL OF HYDROGEN ENERGY, v.33, pp.5266 - 5274-
dc.identifier.issn0360-3199-
dc.identifier.urihttp://hdl.handle.net/10203/90742-
dc.description.abstractThis study aimed to achieve a reliable start-LIP method for continuous enriched culture for hydrogen production from food waste. When ground and diluted food waste (volatile solids (VS) 4.4 +/- 0.2% containing 27 g carbohydrate-chemical oxygen demand/L) was fed, H-2 production decreased below 7.1 mL H-2/g VS (0.10 mol H-2/mol hexose(added)) within 20 days, because the substrate was consumed via non-H-2-producing acidogenesis. To suppress the unintended microbial reactions, three methods were examined: lowering H2 content by continuous CO2 sparging, acid-pretreatment of food waste at pH 2.0 for 1 day, and base-pretreatment of food waste at pH 12.5 for 1 day. The base-pretreatment reduced indigenous anaerobic bacteria in food waste by 4.9 log and enabled a stable long-term operation over 90 days with the H-2 yields of 62.6 mL H-2/g VS (0.87 mol H-2/mol hexose(added)). All bacterial species were affiliated with H-2-producing Clostridium spp. at the cases. Base dosage was increased by 11% compared to the un-pretreated condition. (C) 2008 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.-
dc.languageEnglish-
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD-
dc.subjectMICROBIAL COMMUNITY STRUCTURE-
dc.subjectGRADIENT GEL-ELECTROPHORESIS-
dc.subject2-STAGE FERMENTATION PROCESS-
dc.subjectSP-NOV-
dc.subjectBIOHYDROGEN PRODUCTION-
dc.subjectANAEROBIC-BACTERIA-
dc.subjectMIXED MICROFLORA-
dc.subjectORGANIC WASTE-
dc.subjectSEWAGE-SLUDGE-
dc.subjectMETHANE-
dc.titleEffects of base-pretreatment on continuous enriched culture for hydrogen production from food waste-
dc.typeArticle-
dc.identifier.wosid000260755600043-
dc.identifier.scopusid2-s2.0-52349116345-
dc.type.rimsART-
dc.citation.volume33-
dc.citation.beginningpage5266-
dc.citation.endingpage5274-
dc.citation.publicationnameINTERNATIONAL JOURNAL OF HYDROGEN ENERGY-
dc.contributor.localauthorShin, Hang-Sik-
dc.contributor.nonIdAuthorKim, SH-
dc.type.journalArticleArticle; Proceedings Paper-
dc.subject.keywordAuthorHydrogen production-
dc.subject.keywordAuthorFood waste-
dc.subject.keywordAuthorBase-pretreatment-
dc.subject.keywordAuthorContinuous enriched culture-
dc.subject.keywordAuthorClostridium spp.-
dc.subject.keywordPlusMICROBIAL COMMUNITY STRUCTURE-
dc.subject.keywordPlusGRADIENT GEL-ELECTROPHORESIS-
dc.subject.keywordPlus2-STAGE FERMENTATION PROCESS-
dc.subject.keywordPlusSP-NOV-
dc.subject.keywordPlusBIOHYDROGEN PRODUCTION-
dc.subject.keywordPlusANAEROBIC-BACTERIA-
dc.subject.keywordPlusMIXED MICROFLORA-
dc.subject.keywordPlusORGANIC WASTE-
dc.subject.keywordPlusSEWAGE-SLUDGE-
dc.subject.keywordPlusMETHANE-
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