Metabolic and energetic aspects of biohydrogen production of Clostridium tyrobutyricum: The effects of hydraulic retention time and peptone addition

被引：27

作者：

Whang, Liang-Ming ^{[1
,2
,3
]}

Lin, Che-An ^{[1
]}

Liu, I-Chun ^{[1
]}

Wu, Chao-Wei ^{[1
]}

Cheng, Hai-Hsuan ^{[1
]}

机构：

[1] Natl Cheng Kung Univ, Dept Environm Engn, Tainan 701, Taiwan

[2] Natl Cheng Kung Univ, SERC, Tainan 701, Taiwan

[3] Natl Cheng Kung Univ, RCETS, Tainan 701, Taiwan

来源：

BIORESOURCE TECHNOLOGY | 2011年 / 102卷 / 18期

关键词：

Butyrate; Lactate; B/A ratio; Y-H2/2(Y-HAc + Y-HBu) ratio; Energy demand; BIOLOGICAL HYDROGEN-PRODUCTION; FERREDOXIN OXIDOREDUCTASES; CONTINUOUS CULTURES; SOLVENT PRODUCTION; FERMENTATION; GLUCOSE; PH; MODEL; NADH; ATP;

D O I：

10.1016/j.biortech.2011.03.101

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

This study evaluates the microbial metabolism and energy demand in fermentative biohydrogen production using Clostridium tyrobutyricum FYa102 at different hydraulic retention times (HRT) over a period of 1-18 h. The hydrogen yield shows a positive correlation with the butyrate yield, the B/A ratio, and the Y-H2/2(Y-HAc + Y-HBu) ratio, but a negative correlation with the lactate yield. A decrease in HRT, which is accompanied by an increased biomass growth, tends to decrease the B/A ratio, due presumably to a higher energy demand for microbial growth. The production of lactate at a low HRT, however, may involve an unfavorable change in e(-) equiv distribution to result in a reduced hydrogen production. Finally, the relatively high hydrogen yields observed in the bioreactor with the peptone addition may be ascribed to the utilization of peptone as an additional energy and/or amino-acid source, thus reducing the glucose demand for biomass growth during the hydrogen production process. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：8378 / 8383

页数：6

共 36 条

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