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Cited by 277

The DOI matches its Crossref record; 34 of the 34 references it cites were found in a registry or an index.

Fermentative hydrogen production and bacterial community structure in high‐rate anaerobic bioreactors containing silicone‐immobilized and self‐flocculated sludge

Wu, Shu‐Yii, Hung, Chun‐Hsiung, Lin, Chi‐Neng, Chen, Hsin‐Wei, Lee, An‐Sheng, Chang, Jo‐Shu·2006·Biotechnology and Bioengineering
DOI 10.1002/bit.20800
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Abstract

A novel continuously stirred anaerobic bioreactor (CSABR) seeded with silicone‐immobilized sludge was developed for high‐rate fermentative H 2 production using sucrose as the limiting substrate. The CSABR system was operated at a hydraulic retention time (HRT) of 0.5–6 h and an influent sucrose concentration of 10–40 g COD/L. With a high feeding sucrose concentration (i.e., 30–40 g COD/L) and a short HRT (0.5 h), the CSABR reactor produced H 2 more efficiently with the highest volumetric rate (${\nu}_{{\rm H}_2}$) of 15 L/h/L (i.e., 14.7 mol/d/L) and an optimal yield of ca. 3.5 mol H 2/mol sucrose. The maximum ${\nu}_{{\rm H}_2}$ value obtained from this work is much higher than any other ${\nu}_{{\rm H}_2}$ values ever documented. Formation of self‐flocculated granular sludge occurred during operation at a short HRT. The granule formation is thought to play a pivotal role in the dramatic enhancement of H 2 production rate, because it led to more efficient biomass retention. A high biomass concentration of up to 35.4 g VSS/L was achieved even though the reactor was operated at an extremely low HRT (i.e., 0.5 h). In addition to gaining high biomass concentrations, formation of granular sludge also triggered a transition in bacterial community structure, resulting in a nearly twofold increase in the specific H 2 production rate. According to denatured‐gradient‐gel‐electrophoresis analysis, operations at a progressively decreasing HRT resulted in a decrease in bacterial population diversity. The culture with the best H 2 production performance (at HRT = 0.5 h and sucrose concentration = 30 g COD/L) was eventually dominated by a presumably excellent H 2‐producing bacterial species identified as Clostridium pasteurianum. © 2005 Wiley Periodicals, Inc.

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Metadata

Authors
Wu, S., Hung, C., Lin, C., Chen, H., Lee, A., & Chang, J.
Venue
Biotechnology and Bioengineering
Publisher
Wiley
Published
2005-12-03
Volume
93
Issue
5
Pages
934-946
ISSN
  • 0006-3592 (ISSN-L)
  • 1097-0290
DOI
10.1002/bit.20800
OpenAlex
W1963680642
Cited by
277
References
34
FWCI
78.62
Type
journal article
Language
en
Open access
closed

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