Performance of an air-cathode microbial fuel cell under varied relative humidity conditions in the cathode chamber

被引：9

作者：

Lee, Mungyu ^{[1
,2
]}

Kakarla, Ramesh ^{[1
]}

Min, Booki ^{[1
]}

机构：

[1] Kyung Hee Univ, Dept Environm Sci & Engn, 1 Selocheon Dong, Yongin 446701, Gyeonggi Do, South Korea

[2] GIST, Sch Earth Sci & Environm Engn, Gwangju 61005, South Korea

来源：

BIOPROCESS AND BIOSYSTEMS ENGINEERING | 2019年 / 42卷 / 08期

基金：

新加坡国家研究基金会;

关键词：

Air-cathode MFC; Relative humidity; Cell voltage; Cathode potentials; Oxygen transport; POWER-GENERATION; MEMBRANE; OXYGEN; WATER; OPERATION; TEMPERATURE; SHEWANELLA;

D O I：

10.1007/s00449-019-02122-9

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 performance of an air-cathode microbial fuel cell (MFC) with a cap arrangement was significantly affected by humidity conditions in the cathode. An MFC at a relative humidity (RH) of 88% produced a highest cell voltage of 0.42V (600 ohm) compared to other operations at 50% (0.34V) and 30% (0.29V) RHs. During polarization analysis, MFC operation at 88% RH produced a maximum power density of 0.377W/m(2) (a current density of 1.5A/m(2)), which was 1.8 and 2.9 times higher than with 50% and 30% RHs, respectively. Cyclic voltammogram analysis revealed a higher reduction current of -0.073 A with 88% RH. Furthermore, no increase in dissolved oxygen concentration in the anode chamber was observed with 88% RH. This result suggests that control of humidity conditions in cathode chamber could maximize power generation from an air-cathode MFC.

引用

页码：1247 / 1254

页数：8

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