Exploring redox-mediating characteristics of textile dye-bearing microbial fuel cells: thionin and malachite green

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作   者：

Bor-Yann Chen;  Bin Xu;  Lian-Jie Qin;  John Chi-Wei Lan;  Chung-Chuan Hsueh; 

作者机构：

Yan-Tai University;  Taoyuan;  Department of Chemical and Materials Engineering;  National I-Lan University;  China;  Department of Chemical Engineering and Materials Science;  Taiwan;  264005;  Yuan Ze University;  Biorefinery and Bioprocess Engineering Laboratory;  I-Lan 26047;  School of Environmental and Materials Engineering; 

关键词：

Microbial fuel cells;  Bioelectricity generation;  Redox mediators;  Textile dye decolorization; 

期刊名称：

Bioresource Technology: Biomass, Bioenergy, Biowastes, Conversion Technologies, Biotransformations, Production Technologies

i s s n：

0960-8524

年卷期：

2014 年 169 卷

页   码：

277-283

页   码：

摘   要：

Prior studies indicated that biodecolorized intermediates of azo dyes could act as electron shuttles to stimulate wastewater decolorization and bioelectricity generation (WD&BG) in microbial fuel cells (MFCs). This study tended to explore whether non-azo textile dyes (i.e., thionin and malachite green) could also own such redox-mediating capabilities for WD&BG. Prior findings mentioned that AOH and/or ANH_2 substitute-containing auxochrome compounds (e.g., 2-aminophenol and 1,2-dihydroxybenzene) could effectively mediate electron transport in MFCs for simultaneous WD&BG. This work clearly suggested that the presence of electron-mediating textile dyes (e.g., thionin and malachite green (MG)) in MFCs is promising to stimulate color removal and bioelectricity generation. That is, using MFCs as operation strategy for wastewater biodecolorization is economically promising in industrial applications due to autocatalytic acceleration of electron-flux for WD&BG in MFCs.