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Fermentative biohydrogen production from lactate and acetate

► This study demonstrates H production from lactate and acetate in a continuous flow bioreactor. ► Enriched culture tends to fulfill the equiv requirement for cell growth at a lower VLR condition. ► Enriched culture largely distribute the equiv for H production at a higher VLR condition. ► was the m... Full description

Journal Title: Bioresource Technology June 2012, Vol.113, pp.30-36
Main Author: Wu, Chao-Wei
Other Authors: Whang, Liang-Ming , Cheng, Hai-Hsuan , Chan, Kan-Chi
Format: Electronic Article Electronic Article
Language: English
Subjects:
ID: ISSN: 0960-8524 ; E-ISSN: 1873-2976 ; DOI: 10.1016/j.biortech.2011.12.130
Link: https://www.sciencedirect.com/science/article/pii/S0960852411019110
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recordid: elsevier_sdoi_10_1016_j_biortech_2011_12_130
title: Fermentative biohydrogen production from lactate and acetate
format: Article
creator:
  • Wu, Chao-Wei
  • Whang, Liang-Ming
  • Cheng, Hai-Hsuan
  • Chan, Kan-Chi
subjects:
  • Bioenergy
  • Hydrogen Production
  • Lactate
  • Acetate
  • Clostridium Tyrobutyricum
  • Agriculture
  • Engineering
  • Chemistry
ispartof: Bioresource Technology, June 2012, Vol.113, pp.30-36
description: ► This study demonstrates H production from lactate and acetate in a continuous flow bioreactor. ► Enriched culture tends to fulfill the equiv requirement for cell growth at a lower VLR condition. ► Enriched culture largely distribute the equiv for H production at a higher VLR condition. ► was the major H producer in the CSTR fed with lactate and acetate. In this study, a continuous-flow stirred tank reactor (CSTR) fed with lactate and acetate was operated to enrich hydrogen-producing bacteria. By varying the influent substrate concentrations and hydraulic retention times (HRT), the volumetric loading rate (VLR) of 55.64 kg-COD/m /day seemed to be optimum for this enriched culture for fermentative hydrogen production from lactate and acetate. The results of batch experiments confirmed that the enriched culture tended to fulfill the equiv requirement for cell growth at a lower VLR condition (21.77 kg-COD/m /day), while it could largely distribute the equiv for hydrogen production at a higher VLR condition. However, a maximum lactate/acetate concentration allowed for enriching this culture existed, especially at a lower HRT condition in which wash-out can be an issue for this enriched culture. Finally, the results of cloning and sequencing indicated that was considered the major hydrogen-producing bacteria in the CSTR fed with lactate and acetate.
language: eng
source:
identifier: ISSN: 0960-8524 ; E-ISSN: 1873-2976 ; DOI: 10.1016/j.biortech.2011.12.130
fulltext: no_fulltext
issn:
  • 0960-8524
  • 09608524
  • 1873-2976
  • 18732976
url: Link


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subjectBioenergy ; Hydrogen Production ; Lactate ; Acetate ; Clostridium Tyrobutyricum ; Agriculture ; Engineering ; Chemistry
description► This study demonstrates H production from lactate and acetate in a continuous flow bioreactor. ► Enriched culture tends to fulfill the equiv requirement for cell growth at a lower VLR condition. ► Enriched culture largely distribute the equiv for H production at a higher VLR condition. ► was the major H producer in the CSTR fed with lactate and acetate. In this study, a continuous-flow stirred tank reactor (CSTR) fed with lactate and acetate was operated to enrich hydrogen-producing bacteria. By varying the influent substrate concentrations and hydraulic retention times (HRT), the volumetric loading rate (VLR) of 55.64 kg-COD/m /day seemed to be optimum for this enriched culture for fermentative hydrogen production from lactate and acetate. The results of batch experiments confirmed that the enriched culture tended to fulfill the equiv requirement for cell growth at a lower VLR condition (21.77 kg-COD/m /day), while it could largely distribute the equiv for hydrogen production at a higher VLR condition. However, a maximum lactate/acetate concentration allowed for enriching this culture existed, especially at a lower HRT condition in which wash-out can be an issue for this enriched culture. Finally, the results of cloning and sequencing indicated that was considered the major hydrogen-producing bacteria in the CSTR fed with lactate and acetate.
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