Interactive influences of decolorized metabolites on electron-transfer characteristics of microbial fuel cells

•Decipher decolorized metabolites as promising electron shuttles (ESs).•Propose redox-mediating mechanisms to significantly enhance MFC efficiency.•Suggest appropriate modes of practical MFC-assisted bioremediation. This study clearly uncovered how and why decolorized metabolites (DM) or intermediat...

Full description

Saved in:
Bibliographic Details
Published in:Biochemical engineering journal 2016-05, Vol.109, p.297-304
Main Authors: Qin, Lian-Jie, Han, Ke, Yueh, Pei-Lin, Hsueh, Chuan-Chung, Chen, Bor-Yann
Format: Article
Language:English
Subjects:
Anaerobic processes
Batch processing
Biocatalysis
Bioconversion
Electron-shuttles
Microbial fuel cells
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Decipher decolorized metabolites as promising electron shuttles (ESs).•Propose redox-mediating mechanisms to significantly enhance MFC efficiency.•Suggest appropriate modes of practical MFC-assisted bioremediation. This study clearly uncovered how and why decolorized metabolites (DM) or intermediates could stimulate bioelectricity-generating capabilities in microbial fuel cells (MFCs) due to synergistic interactions. It also disclosed mysteries behind the reversible stabilities of electron shuttles (ESs) of such biodegraded intermediates in practical MFCs. Electrochemical impedance spectra indicated that DM of reactive green 19 (RG19), reactive blue 160 (RBu160) and malachite green (MG) could significantly stimulate bioelectricity-generating capabilities in MFCs due to significant reduction of internal resistance. With autocatalysis of DM, apparently feedback stimulation of decontaminated species directly controlled the performance of MFC-based bioremediation.
ISSN:1369-703X
1873-295X
DOI:10.1016/j.bej.2016.01.028