Enhanced bioelectricity generation of air-cathode buffer-free microbial fuel cells through short-term anolyte pH adjustment

被引：17

作者：

Ren, Yueping ^{[1
]}

Chen, Jinli ^{[1
]}

Li, Xiufen ^{[1
]}

Yang, Na ^{[1
]}

Wang, Xinhua ^{[1
]}

机构：

[1] Jiangnan Univ, Jiangsu Cooperat Innovat Ctr Technol & Mat Water, Sch Environm & Civil Engn, Jiangsu Key Lab Anaerob Biotechnol, Wuxi 214122, Jiangsu, Peoples R China

来源：

BIOELECTROCHEMISTRY | 2018年 / 120卷

基金：

中国国家自然科学基金;

关键词：

Microbial fuel cell; Buffer-free; Anolyte acidification; Initial pH adjustment; WASTE-WATER; BIOELECTROCHEMICAL SYSTEMS; COMMUNITY STRUCTURE; POWER-GENERATION; ACTIVATED CARBON; PERFORMANCE; CATHOLYTES; DIVERSITY; DYNAMICS; BIOFILMS;

D O I：

10.1016/j.bioelechem.2017.12.007

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Short-term initial anolyte pH adjustment can relieve the performance deterioration of the single-chamber air cathode buffer-free microbial fuel cell (BFMFC) caused by anolyte acidification. Adjusting the initial anolyte pH to 9 in 5 running cycles is the optimum strategy. The relative abundance of the electrochemically active Geobacter in the KCl-pH 9-MFC anode biofilm increased from 59.01% to 75.13% after the short-term adjustment. The maximum power density (P-max) of the KCI-pH 9-MFC was elevated from 316.4 mW.m(-2) to 511.6 mW.m(-2), which was comparable with that of the PBS-MFC And, after the short-term adjusting, new equilibrium between the anolyte pH and the anode biofilm electrochemical activity has been established in the BFMFC, which ensured the sustainability of the improved bioelectricity generation performance. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：145 / 149

页数：5

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