PMID- 32305841
OWN - NLM
STAT- MEDLINE
DCOM- 20200526
LR  - 20200526
IS  - 1873-2976 (Electronic)
IS  - 0960-8524 (Linking)
VI  - 309
DP  - 2020 Aug
TI  - Enhanced electron transfer on microbial electrosynthesis biocathode by 
      polypyrrole-coated acetogens.
PG  - 123322
LID - S0960-8524(20)30594-0 [pii]
LID - 10.1016/j.biortech.2020.123322 [doi]
AB  - Extracellular electron transfer (EET) is a significant pathway to transport 
      electrons between bacteria and electrode in microbial electrosynthesis systems 
      (MESs). To enhance EET in the MES, a high-conductivity polymer, polypyrrole 
      (PPy), was coated on the surface of mixed culture acetogens in situ and the 
      PPy-coated bacteria were inoculated on the cathode of MES. The charge transfer 
      resistance of PPy-coated biocathode was 33%-70% of that with PPy-uncoated. 
      Acetate production rate and Faradic efficiency in PPy-coated biocathodes 
      increased by 3 to 6 times. After 960 h operation, Acetobacterium, Desulfovibrio, 
      and Acinetobacter dominate the community on the coated and uncoated biocathode. 
      Quinone loop and NADH dehydrogenase to ubiquinone were involved in electron 
      transfer pathway of biocathode and stimulated by PPy coating. Low-level 
      expression of C-type cytochromes on biocathode indicated its less important role 
      in inward EET. The study provided useful information for applications of 
      high-conductivity chemicals in microbial electrosynthesis.
CI  - Copyright (c) 2020 Elsevier Ltd. All rights reserved.
FAU - Luo, Haiping
AU  - Luo H
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510275, China.
FAU - Qi, Jiaxin
AU  - Qi J
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510275, China.
FAU - Zhou, Meizhou
AU  - Zhou M
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510275, China.
FAU - Liu, Guangli
AU  - Liu G
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510275, China.
FAU - Lu, Yaobin
AU  - Lu Y
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510275, China.
FAU - Zhang, Renduo
AU  - Zhang R
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510275, China.
FAU - Zeng, Cuiping
AU  - Zeng C
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510275, China. Electronic address: 
      zengcp@mail.sysu.edu.cn.
LA  - eng
PT  - Journal Article
DEP - 20200406
PL  - England
TA  - Bioresour Technol
JT  - Bioresource technology
JID - 9889523
RN  - 0 (Polymers)
RN  - 0 (Pyrroles)
RN  - 142M471B3J (Carbon Dioxide)
SB  - IM
MH  - Carbon Dioxide
MH  - Electrodes
MH  - Electron Transport
MH  - *Electrons
MH  - *Polymers
MH  - Pyrroles
OTO - NOTNLM
OT  - Biocathode
OT  - Extracellular electron transfer
OT  - Microbial electrosynthesis system
OT  - Polypyrrole-coated acetogens
COIS- Declaration of Competing Interest The authors declare that they have no known 
      competing financial interests or personal relationships that could have appeared 
      to influence the work reported in this paper.
EDAT- 2020/04/20 06:00
MHDA- 2020/05/27 06:00
CRDT- 2020/04/20 06:00
PHST- 2020/01/28 00:00 [received]
PHST- 2020/04/02 00:00 [revised]
PHST- 2020/04/03 00:00 [accepted]
PHST- 2020/04/20 06:00 [pubmed]
PHST- 2020/05/27 06:00 [medline]
PHST- 2020/04/20 06:00 [entrez]
AID - S0960-8524(20)30594-0 [pii]
AID - 10.1016/j.biortech.2020.123322 [doi]
PST - ppublish
SO  - Bioresour Technol. 2020 Aug;309:123322. doi: 10.1016/j.biortech.2020.123322. Epub 
      2020 Apr 6.