A new electrochemically active bacterium phylogenetically related to Tolumonas osonensis and power performance in MFCs

被引：61

作者：

Luo, Jianmei ^{[1
]}

Yang, Jia ^{[1
]}

He, Huanhuan ^{[2
]}

Jin, Tao ^{[2
]}

Zhou, Li ^{[3
]}

Wang, Min ^{[1
]}

Zhou, Minghua ^{[2
]}

机构：

[1] Tianjin Univ Sci & Technol, Key Lab Ind Fermentat Microbiol, Minist Educ, Tianjin Key Lab Ind Microbiol,Coll Biotechnol, Tianjin 300457, Peoples R China

[2] Nankai Univ, Key Lab Pollut Proc & Environm Criteria, Tianjin Key Lab Urban Ecol Environm Remediat & Po, Coll Environm Sci & Engn,Minist Educ, Tianjin 300071, Peoples R China

[3] Minist Agr, Agroenvironm Protect Inst, Tianjin 300191, Peoples R China

来源：

BIORESOURCE TECHNOLOGY | 2013年 / 139卷

关键词：

Microbial fuel cells; Electricigens; Tolumonas osonensis; Power performance; Electrochemical activity; ELECTRICITY-GENERATION; IN-SITU; MEMBRANE; OXIDATION; BIOFILMS; IMPROVE;

D O I：

10.1016/j.biortech.2013.04.031

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

A facultative anaerobic bacterium (designated as P2-A-1) was isolated from microbial fuel cells (MFCs) inoculated with sludge from a sewage treatment plant. Based on 16S rDNA sequence analysis, the strain was identified as Tolumonas osonensis OCF 7(T) according to its biochemical, physiological and morphological characteristics. Through parameters optimization, the P2-A-1 MFC reached the maximum power density of 424 mW/m(2) in the substrate of 2 g/L sodium acetate. Further, a facile bacteria treatment approach by chemically "perforating" pores and channels on bacterial membrane was developed to significantly improve the power density. And 1 mM of EDTA-treated cell yielded the highest power density of 509.1 mW/m(2) because the membrane permeability of cell was enhanced by verification of coenzyme Q and fatty acid composition tests. It offers a novel facultative anaerobic Gram-positive bacterium that can utilize a wide variety of substrates for power production, making it highly valuable for application in MFCs. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：141 / 148

页数：8

共 32 条

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