Simultaneous Coproduction of Hydrogen and Ethanol in Anaerobic Packed-Bed Reactors

被引：14

作者：

dos Reis, Cristiane Marques ^{[1
]}

Silva, Edson Luiz ^{[1
]}

机构：

[1] Univ Fed Sao Carlos, Dept Chem Engn, BR-13565905 Sao Carlos, SP, Brazil

来源：

BIOMED RESEARCH INTERNATIONAL | 2014年 / 2014卷

基金：

巴西圣保罗研究基金会;

关键词：

FLUIDIZED-BED; BIOHYDROGEN PRODUCTION; SUBSTRATE CONCENTRATION; ENTEROBACTER-AEROGENES; ACIDS PRODUCTION; FIXED-BED; FERMENTATION; SLUDGE; WASTE; GENERATION;

D O I：

10.1155/2014/921291

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

This study evaluated the use of an anaerobic packed-bed reactor for hydrogen production at different hydraulic retention times (HRT) (1-8 h). Two reactors filled with expanded clay and fed with glucose (3136-3875mg L-1) were operated at different total upflow velocities: 0.30 cms(-1) (R030) and 0.60 cms(-1) (R060). The effluent pH of the reactors was maintained between 4 and 5 by adding NaHCO3 and HCl solutions. It was observed a maximum hydrogen production rate of 0.92 LH2 h(-1) L-1 in R030 at HRT of 1 h. Furthermore, the highest hydrogen yield of 2.39 mol H-2 mol(-1) glucose was obtained in R060. No clear trend was observed by doubling the upflow velocities at this experiment. High ethanol production was also observed, indicating that the ethanol-pathway prevailed throughout the experiment.

引用

页数：10

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