| Effects of initial lactic acid concentration, HRTs, and OLRs on bio-hydrogen production from lactate-type fermentation. | |
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MedLine Citation:
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PMID: 22071244 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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A batch test and continuous operation were performed to identify the effect of lactate on hydrogen production at pH 4.5. When the initial lactic acid concentration was increased from 0 to 8g/L in the batch test, the hydrogen yield also increased from 1.41 to 1.72mol-H(2)/mol-glucose. The system exhibited a long lag time and an insignificant hydrogen yield with 16g-lactic acid/L. A continuous stirred tank reactor (CSTR) was operated at different organic loading rates (OLRs: 10, 15, 20 and 40g/L/day) and hydraulic retention times (HRTs: 6, 12 and 24h). At an OLR of 20g-glucose/L/day and 12h of HRT, the hydrogen yield was 1.2mol-H(2)/mol-glucose. The yield decreased with a 24h HRT. Even though lactate was one of the major constituents of volatile fatty acids (VFAs), hydrogen production was feasible throughout the operation. Clostridium sp. was the dominant hydrogen-producing bacteria in the system. |
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Authors:
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Tae-Hyeong Kim; Yunhee Lee; Kwang-Hyeon Chang; Sun-Jin Hwang |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-10-8 |
Journal Detail:
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Title: Bioresource technology Volume: - ISSN: 1873-2976 ISO Abbreviation: - Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-11-10 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9889523 Medline TA: Bioresour Technol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 Elsevier Ltd. All rights reserved. |
Affiliation:
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Department of Environmental Science and Engineering, Center for Environmental Studies, Kyung Hee University, Seochon-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-701, Republic of Korea. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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