H2 production with anaerobic sludge using activated-carbon supported packed-bed bioreactors

Kuo Shing Lee; Yung Sheng Lo; Yung Chung Lo; Ping Jei Lin; Jo Shu Chang

doi:10.1023/A:1021915318179

H₂ production with anaerobic sludge using activated-carbon supported packed-bed bioreactors

Kuo Shing Lee, Yung Sheng Lo, Yung Chung Lo, Ping Jei Lin, Jo Shu Chang

Department of Chemical Engineering

Research output: Contribution to journal › Article › peer-review

128 Citations (Scopus)

Abstract

Packed-bed bioreactors containing activated carbon as support carrier were used to produce H₂ anaerobically from a sucrose-limiting medium while acclimated sewage sludge was used as the H₂ producer. The effects of bed porosity (ε_b) and substrate loading rate on H₂ fermentation were examined using packed beds with ε_b of 70-90% being operated at hydraulic retention times (HRT) of 0.5-4 h. Higher ε_b and lower HRT favored H₂ production. With 20 g COD 1^-1 of sucrose in the feed, the optimal H₂ production rate (7.4 1 h^-1 1^-1) was obtained when the bed with ε_b = 90% was operated at HRT = 0.5 h. Flocculation of cells enhanced the retention of sludge for stable operations of the bioreactor at low HRTs. The gas products resulting from fermentative H₂ production consisted of 30-40% H₂ and 60-70% CO₂. Butyric acid was the primary soluble product, followed by propionic acid and valeric acid.

Original language	English
Pages (from-to)	133-138
Number of pages	6
Journal	Biotechnology Letters
Volume	25
Issue number	2
DOIs	https://doi.org/10.1023/A:1021915318179
Publication status	Published - 2003 Jan

All Science Journal Classification (ASJC) codes

Biotechnology
Bioengineering
Applied Microbiology and Biotechnology

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title = "H2 production with anaerobic sludge using activated-carbon supported packed-bed bioreactors",

abstract = "Packed-bed bioreactors containing activated carbon as support carrier were used to produce H2 anaerobically from a sucrose-limiting medium while acclimated sewage sludge was used as the H2 producer. The effects of bed porosity (εb) and substrate loading rate on H2 fermentation were examined using packed beds with εb of 70-90% being operated at hydraulic retention times (HRT) of 0.5-4 h. Higher εb and lower HRT favored H2 production. With 20 g COD 1-1 of sucrose in the feed, the optimal H2 production rate (7.4 1 h-1 1-1) was obtained when the bed with εb = 90% was operated at HRT = 0.5 h. Flocculation of cells enhanced the retention of sludge for stable operations of the bioreactor at low HRTs. The gas products resulting from fermentative H2 production consisted of 30-40% H2 and 60-70% CO2. Butyric acid was the primary soluble product, followed by propionic acid and valeric acid.",

author = "Lee, {Kuo Shing} and Lo, {Yung Sheng} and Lo, {Yung Chung} and Lin, {Ping Jei} and Chang, {Jo Shu}",

note = "Funding Information: The authors gratefully acknowledge the financial support of National Science Council of Republic of China under Grant No. NSC91-2815-C-035-013-E. The authors thank Miss Ji-Fung Wu for her assistance on bioreactor operations and Prof C.-Y. Lin of Feng Chia University for providing the H2-producing seed sludge. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.",

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doi = "10.1023/A:1021915318179",

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AU - Chang, Jo Shu

N1 - Funding Information: The authors gratefully acknowledge the financial support of National Science Council of Republic of China under Grant No. NSC91-2815-C-035-013-E. The authors thank Miss Ji-Fung Wu for her assistance on bioreactor operations and Prof C.-Y. Lin of Feng Chia University for providing the H2-producing seed sludge. Copyright: Copyright 2008 Elsevier B.V., All rights reserved.

PY - 2003/1

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N2 - Packed-bed bioreactors containing activated carbon as support carrier were used to produce H2 anaerobically from a sucrose-limiting medium while acclimated sewage sludge was used as the H2 producer. The effects of bed porosity (εb) and substrate loading rate on H2 fermentation were examined using packed beds with εb of 70-90% being operated at hydraulic retention times (HRT) of 0.5-4 h. Higher εb and lower HRT favored H2 production. With 20 g COD 1-1 of sucrose in the feed, the optimal H2 production rate (7.4 1 h-1 1-1) was obtained when the bed with εb = 90% was operated at HRT = 0.5 h. Flocculation of cells enhanced the retention of sludge for stable operations of the bioreactor at low HRTs. The gas products resulting from fermentative H2 production consisted of 30-40% H2 and 60-70% CO2. Butyric acid was the primary soluble product, followed by propionic acid and valeric acid.

AB - Packed-bed bioreactors containing activated carbon as support carrier were used to produce H2 anaerobically from a sucrose-limiting medium while acclimated sewage sludge was used as the H2 producer. The effects of bed porosity (εb) and substrate loading rate on H2 fermentation were examined using packed beds with εb of 70-90% being operated at hydraulic retention times (HRT) of 0.5-4 h. Higher εb and lower HRT favored H2 production. With 20 g COD 1-1 of sucrose in the feed, the optimal H2 production rate (7.4 1 h-1 1-1) was obtained when the bed with εb = 90% was operated at HRT = 0.5 h. Flocculation of cells enhanced the retention of sludge for stable operations of the bioreactor at low HRTs. The gas products resulting from fermentative H2 production consisted of 30-40% H2 and 60-70% CO2. Butyric acid was the primary soluble product, followed by propionic acid and valeric acid.

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H₂ production with anaerobic sludge using activated-carbon supported packed-bed bioreactors

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