PMID- 31087870
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20191120
IS  - 0250-3301 (Print)
IS  - 0250-3301 (Linking)
VI  - 40
IP  - 5
DP  - 2019 May 8
TI  - [Impact Mechanisms of Carboxyl Group Modified Cathode on Acetate Production in 
      Microbial Electrosynthesis Systems].
PG  - 2302-2309
LID - 10.13227/j.hjkx.201808250 [doi]
AB  - Microbial electrosynthesis systems (MESs) can convert carbon dioxide into added 
      value compounds using microorganisms as catalyst, which is expected to help 
      achieve conversion of greenhouse gases into resources. However, the synthetic 
      efficiency of MESs is far behind the industry requirements. In this study, carbon 
      cloth surfaces were bonded with carboxyl groups by electrochemical reduction of 
      aryl diazonium salts and then used as a cathode in MESs reactors. The results 
      showed that the hydrophilicity of the carbon cloth surfaces improved after the 
      carboxyl groups were modified. However, weaker current of cyclic voltammetry was 
      obtained in the modified cathode. Significant differences were observed between 
      modified (CA-H, CA-M, CA-L) and non-modified cathode (CK) during the start-up 
      period. After 48h, the hydrogen production rate of CA-H, CA-M, CA-L was 21.45, 
      28.60, and 22.75 times higher than CK. After 120h, the acetate accumulation 
      concentration of CA-H, CA-M, CA-L was 2.01, 2.43, and 1.44 times higher than CK. 
      After 324h, there was little difference in the electrochemical activity of 
      cathodic biofilm and protein content (about 0.47 mg.cm(-2)) in all groups. The 
      analysis of the community structure of cathodic biofilm showed that, in the genus 
      level, Acetobacterium, Norank_p_Saccharibacteria, and Thioclava were the dominant 
      species, accounting for 59.6% to 82.1%. There was little difference in the 
      relative abundance of Acetobacterium in all groups (31.3% to 40.1%). However, the 
      relative abundance of norank_p_Saccharibacteria in CA-H, CA-M, CA-L, and CK were 
      16.1%, 24.6%, 31.1%, and 37.5%, respectively. The carboxyl modified cathode had a 
      great influence on the start-up stage of MESs, which could be a new idea for the 
      rapid start-up of MESs.
FAU - Qi, Jia-Xin
AU  - Qi JX
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510006, China.
FAU - Zeng, Cui-Ping
AU  - Zeng CP
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510006, China.
FAU - Luo, Hai-Ping
AU  - Luo HP
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510006, China.
FAU - Liu, Guang-Li
AU  - Liu GL
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510006, China.
FAU - Zhang, Ren-Duo
AU  - Zhang RD
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510006, China.
FAU - Lu, Yao-Bin
AU  - Lu YB
AD  - Guangdong Provincial Key Laboratory of Environmental Pollution Control and 
      Remediation Technology, School of Environmental Science and Engineering, Sun 
      Yat-sen University, Guangzhou 510006, China.
LA  - chi
PT  - English Abstract
PT  - Journal Article
PL  - China
TA  - Huan Jing Ke Xue
JT  - Huan jing ke xue= Huanjing kexue
JID - 8405344
OTO - NOTNLM
OT  - acetate production
OT  - biofilm
OT  - carboxyl group modified
OT  - cathode
OT  - microbial electrosynthesis systems (MESs)
EDAT- 2019/05/16 06:00
MHDA- 2019/05/16 06:01
CRDT- 2019/05/16 06:00
PHST- 2019/05/16 06:00 [entrez]
PHST- 2019/05/16 06:00 [pubmed]
PHST- 2019/05/16 06:01 [medline]
AID - 10.13227/j.hjkx.201808250 [doi]
PST - ppublish
SO  - Huan Jing Ke Xue. 2019 May 8;40(5):2302-2309. doi: 10.13227/j.hjkx.201808250.