Biological hydrogen production in a UASB reactor with granules. II: Reactor performance in 3-year operation

Han-Qing, Yu and Mu, Yang (2006) Biological hydrogen production in a UASB reactor with granules. II: Reactor performance in 3-year operation. Biotechnology and Bioengineering, 94 5: 988-995. doi:10.1002/bit.20923


Author Han-Qing, Yu
Mu, Yang
Title Biological hydrogen production in a UASB reactor with granules. II: Reactor performance in 3-year operation
Journal name Biotechnology and Bioengineering   Check publisher's open access policy
ISSN 0006-3592
1097-0290
Publication date 2006-08-05
Sub-type Article (original research)
DOI 10.1002/bit.20923
Volume 94
Issue 5
Start page 988
End page 995
Total pages 8
Place of publication Hoboken, NJ, United States
Publisher John Wiley and Sons
Language eng
Subject 090703 Environmental Technologies
090608 Renewable Power and Energy Systems Engineering (excl. Solar Cells)
Formatted abstract
The experiment was conducted to evaluate the performance of an upflow anaerobic sludge blanket (UASB) with granules for H2 production from a sucrose-rich synthetic wastewater at various substrate concentrations (5.33-28.07 g-COD/L) and hydraulic retention times (HRTs) (3-30 h) for over 3 years. The kinetics of H2 production was evaluated, and the sludge yield and endogenous decay coefficient of the H2-producing granules were estimated to be 0.334 g-VSS/g-COD and 0.004/h, respectively. Based on Gibbs free energy calculations, the formation thermodynamics of caproate, an important aqueous product, were analyzed. Experimental results show that the H2 partial pressure in biogas decreased with increasing substrate concentration, but was not sensitive to the variation of HRT in a range of 6-22 h. The H2 production rate increased with increasing substrate concentration, but decreased with increasing HRT. The H2 yield was in the range of 0.49-1.44 mol-H2/mol-glucose. Acetate, butyrate, caporate, and ethanol were the main aqueous products in the reactor, and their concentrations were dependent on both substrate concentration and HRT. An elevated substrate concentration resulted in a shift of fermentation from butyrate- to caporate-type in the reactor and the formation of caproate was dependent on the H2 partial pressure. The 3-year experimental results demonstrate that H2 could be produced continuously and stably from the acidogenic-granule-based UASB reactor.
Keyword Granules
Haudraulic retention time (HRT)
H2 performance
Substrate concentration
Upflow anaerobic sludge blanket reactor (UASB)
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
Advanced Water Management Centre Publications
 
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