Electricity generation and microbial community response to substrate changes in microbial fuel cell

被引:157
作者
Zhang, Yifeng [1 ,2 ]
Min, Booki [1 ,3 ]
Huang, Liping [2 ]
Angelidaki, Irini [1 ]
机构
[1] Tech Univ Denmark, Dept Environm Engn, DK-2800 Lyngby, Denmark
[2] Dalian Univ Technol, Dept Environm Sci & Technol, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China
[3] Kyung Hee Univ, Dept Environm Sci & Engn, Yongin 446701, Gyeonggi Do, South Korea
关键词
Microbial fuel cell; Bacteria community; Substrate changes; Fermentable substrate; Volatile fatty acids; PERFORMANCE; MICROORGANISMS; ENRICHMENT; REDUCTION; DIVERSITY; ACETATE;
D O I
10.1016/j.biortech.2010.09.044
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The effect of substrate changes on the performance and microbial community of two-chamber microbial fuel cells (MFCs) was investigated in this study. The MFCs enriched with a single substrate (e.g., acetate, glucose, or butyrate) had different acclimatization capability to substrate changes. The MFC enriched with glucose showed rapid and higher power generation, when glucose was switched with acetate or butyrate. However, the MFC enriched with acetate needed a longer adaptation time for utilizing glucose. Microbial community was also changed when the substrate was changed. Clostridium and Bacilli of phylum Firmicutes were detected in acetate-enriched MFCs after switching to glucose. By contrast, Firmicutes completely disappeared and Geobacter-like species were specifically enriched in glucose-enriched MFCs after feeding acetate to the reactor. This study further suggests that the type of substrate fed to MFC is a very important parameter for reactor performance and microbial community, and significantly affects power generation in MFCs. (C) 2010 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1166 / 1173
页数:8
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