Accelerated start-up of two-chambered microbial fuel cells: Effect of anodic positive poised potential

被引：201

作者：

Wang, Xin ^{[1
]}

Feng, Yujie ^{[1
]}

Ren, Nanqi ^{[1
]}

Wang, Heming ^{[1
]}

Lee, He ^{[1
]}

Li, Nan ^{[1
]}

Zhao, Qingliang ^{[1
]}

机构：

[1] Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2009年 / 54卷 / 03期

基金：

美国国家科学基金会;

关键词：

Microbial fuel cell; Poised potential; Start-up; Internal resistance; Power output; ELECTRON-TRANSFER; ELECTRICITY-GENERATION; FE(III)-REDUCING BACTERIUM; BIOFUEL CELLS; MICROORGANISMS; ENRICHMENT; EFFICIENCY; REDUCTION; NANOWIRES; OXIDATION;

D O I：

10.1016/j.electacta.2008.07.085

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The acclimation of anode-respiring bacteria (ARB) played a key role in starting up a microbial fuel cell (MFC). Conventionally, spontaneous colonization was employed in this process. Descript here is an investigation of decreasing the start-up time by applying an anodic positive poised potential. During start-up period, the maximal current output increased from 0.42 to 3 mA since the anode potential was poised at +200mV versus Ag/AgCl, which was due to the increase of driving force of substrate oxidation. A higher voltage Output and a lower charge transfer resistance analyzed by electrochemical impedance spectroscopy (EIS) were observed, showing that applied potential could increase the electrochemical activity of anodic microbiota during start-up period. The MFC with anodic positive poised potential need 35 days to obtain a similar current output in two consecutive circles, which was 24 days faster than that of the control MFC operated under 1000 Omega. When both MFCs were started up, no difference on performance was observed. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1109 / 1114

页数：6

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