LACTATE AND ETHANOL AS INTERMEDIATES IN 2-PHASE ANAEROBIC-DIGESTION

被引:84
作者
PIPYN, P
VERSTRAETE, W
机构
[1] Laboratory of Microbial Ecology, State University of Ghent, Coupure 533, Gent,9000, Belgium
关键词
Anaerobic digestion - Thermodynamics - Water quality - Volatile fatty acids - Lactic acid;
D O I
10.1002/bit.260230521
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
The thermodynamics of the various anaerobic digestion patterns of hexose to methane are compared. It appears that by directing the hexose-hydrolysis phase towards ethanol and lactic acid production, methanogenesis can be enhanced because the syntrophic bacteria are allocated more potentially available energy. This hypothesis was confirmed in a series of laboratory test runs. They revealed that lactic acid and ethanol as intermediates, in comparison to lower volatile fatty acids, give rise to a considerably higher effluent quality and a slightly larger biogas production. © 1981 John Wiley & Sons, Inc.
引用
收藏
页码:1145 / 1154
页数:10
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