title: Exploring redox-mediating characteristics of textile dye-bearing microbial fuel cells: thionin and malachite green.
abstract: 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 OH and/or NH2 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.
authors: Department of Chemical and Materials Engineering, National I-Lan University, I-Lan 26047, Taiwan. Electronic address: boryannchen@yahoo.com.tw.
authors: Bor-Yann
authors: BY
authors: Chen
authors: School of Environmental and Materials Engineering, Yan-Tai University, 264005, China.
authors: Bin
authors: B
authors: Xu
authors: School of Environmental and Materials Engineering, Yan-Tai University, 264005, China.
authors: Lian-Jie
authors: LJ
authors: Qin
authors: Biorefinery and Bioprocess Engineering Laboratory, Department of Chemical Engineering and Materials Science, Yuan Ze University, Taoyuan, Taiwan.
authors: John Chi-Wei
authors: JC
authors: Lan
authors: Department of Chemical and Materials Engineering, National I-Lan University, I-Lan 26047, Taiwan.
authors: Chung-Chuan
authors: CC
authors: Hsueh
mesh_terms: D001674:Bioelectric Energy Sources; D004396:Coloring Agents / Q000737:chemistry*; D058266:Dielectric Spectroscopy; D004560:Electricity; D055664:Electrochemical Techniques; D004566:Electrodes; D007700:Kinetics; D010084:Oxidation-Reduction; D012394:Rosaniline Dyes / Q000737:chemistry*; D013784:Textiles; D054809:Thionins / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D012394:Rosaniline Dyes; D054809:Thionins; C005095:malachite green
keywords: Bioelectricity generation; Microbial fuel cells; Redox mediators; Textile dye decolorization