TY - JOUR
T1 - Electron transport phenomena of electroactive bacteria in microbial fuel cells
T2 - a review of Proteus hauseri
AU - Ng, I. Son
AU - Hsueh, Chung Chuan
AU - Chen, Bor Yann
N1 - Funding Information:
IS, CC, and BY prepared and wrote the manuscript. All authors read and approved the final manuscript. This study is also dedicated to the memory of Dolloff F. Bishop and Henry Tabak, as most of novel concepts were initiated while the author Bor-Yann Chen worked in National Risk Management Research Laboratory (NRMRL), US Environmental Protection Agency (EPA), Cincinnati, Ohio, U.S.A. under their mentorships. The authors declare that they have no competing interests. The authors have agreed to provide the data and material for open access. The authors approved the consent for publishing the manuscript. All the authors have read and agreed the ethics for publishing the manuscript. Financial supports (MOST106-2621-M-197-001, MOST105-2622-E-197-012-CC3, MOST105-2221-E-197-022, MOST-105-2221-E-006-225-MY3) from the Ministry of Sciences and Technology, Taiwan for the project of Microbial Fuel Cells (MFCs) sdg conducted in Biochemical Engineering Laboratory, C&ME NIU and National Cheng Kung University. Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
PY - 2017/12/1
Y1 - 2017/12/1
N2 - This review tended to decipher the expression of electron transfer capability (e.g., biofilm formation, electron shuttles, swarming motility, dye decolorization, bioelectricity generation) to microbial fuel cells (MFCs). As mixed culture were known to perform better than pure microbial cultures for optimal expression of electrochemically stable activities to pollutant degradation and bioenergy recycling, Proteus hauseri isolated as a “keystone species” to maintain such ecologically stable potential for power generation in MFCs was characterized. P. hauseri expressed outstanding performance of electron transfer (ET)-associated characteristics [e.g., reductive decolorization (RD) and bioelectricity generation (BG)] for electrochemically steered bioremediation even though it is not a nanowire-generating bacterium. This review tended to uncover taxonomic classification, genetic or genomic characteristics, enzymatic functions, and bioelectricity-generating capabilities of Proteus spp. with perspectives for electrochemical practicability. As a matter of fact, using MFCs as a tool to evaluate ET capabilities, dye decolorizer(s) could clearly express excellent performance of simultaneous bioelectricity generation and reductive decolorization (SBG and RD) due to feedback catalysis of residual decolorized metabolites (DMs) as electron shuttles (ESs). Moreover, the presence of reduced intermediates of nitroaromatics or DMs as ESs could synergistically augment efficiency of reductive decolorization and power generation. With swarming mobility, P. hauseri could own significant biofilm-forming capability to sustain ecologically stable consortia for RD and BG. This mini-review evidently provided lost episodes of great significance about bioenergy-steered applications in myriads of fields (e.g., biodegradation, biorefinery, and electro-fermentation).[Figure not available: see fulltext.].
AB - This review tended to decipher the expression of electron transfer capability (e.g., biofilm formation, electron shuttles, swarming motility, dye decolorization, bioelectricity generation) to microbial fuel cells (MFCs). As mixed culture were known to perform better than pure microbial cultures for optimal expression of electrochemically stable activities to pollutant degradation and bioenergy recycling, Proteus hauseri isolated as a “keystone species” to maintain such ecologically stable potential for power generation in MFCs was characterized. P. hauseri expressed outstanding performance of electron transfer (ET)-associated characteristics [e.g., reductive decolorization (RD) and bioelectricity generation (BG)] for electrochemically steered bioremediation even though it is not a nanowire-generating bacterium. This review tended to uncover taxonomic classification, genetic or genomic characteristics, enzymatic functions, and bioelectricity-generating capabilities of Proteus spp. with perspectives for electrochemical practicability. As a matter of fact, using MFCs as a tool to evaluate ET capabilities, dye decolorizer(s) could clearly express excellent performance of simultaneous bioelectricity generation and reductive decolorization (SBG and RD) due to feedback catalysis of residual decolorized metabolites (DMs) as electron shuttles (ESs). Moreover, the presence of reduced intermediates of nitroaromatics or DMs as ESs could synergistically augment efficiency of reductive decolorization and power generation. With swarming mobility, P. hauseri could own significant biofilm-forming capability to sustain ecologically stable consortia for RD and BG. This mini-review evidently provided lost episodes of great significance about bioenergy-steered applications in myriads of fields (e.g., biodegradation, biorefinery, and electro-fermentation).[Figure not available: see fulltext.].
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U2 - 10.1186/s40643-017-0183-3
DO - 10.1186/s40643-017-0183-3
M3 - Review article
AN - SCOPUS:85044105913
VL - 4
JO - Bioresources and Bioprocessing
JF - Bioresources and Bioprocessing
SN - 2197-4365
IS - 1
M1 - 53
ER -