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Promoted bioelectrocatalytic activity of microbial electrolysis cell (MEC) in sulfate removal through the synergy between neutral red and graphite felt
Wang, Kai1,2; Cao, Zhiqin2,3; Chang, Junjun2,4; Sheng, Yuxing2; Cao, Hongbin2; Yan, Keping1; Zhang, Yi1,2; Xia, Zheng1
2017-11-01
Source PublicationCHEMICAL ENGINEERING JOURNAL
ISSN1385-8947
Volume327Issue:NOVPages:183-192
Abstract

The recent thrust in utilizing microbial electrolysis cell (MEC) has led to accelerated attention in environmental decontamination. One key factor that governs this process is electron transfer efficiency. In this study, neutral red (NR) is involved as electron transfer mediator to investigate whether it could contribute to MEC performance. Afterwards, influence of electrode material selection on NR addition system was also studied. The results indicate MEC with NR shows better electrochemistry activity, which means sulfate-reducing bacteria (SRB) can response to electron transfer mediator NR. Further study reveals graphite felt triggers a better synergy with NR to facilitate electron utilization efficiency of the system subsequently maintains bacteria metabolic activity for a longer time. Sulfate removal in this reactor reaches 79.0% with electron utilization efficiency of 54.2%. To explore the mechanism, electrode bioelectrochemical property, microorganism activity and community were investigated. Electrode morphology analysis confirms graphite felt affords abundant space for the growth of electroactive microorganisms especially SRB and promotes electron exchange through cooperating with NR, which fits in with electrochemical impedance spectroscopy (EIS) analysis. High-throughput sequencing analysis confirms improved reactor can fortify the population dominant of SRB in the community which greatly raises electron utilization efficiency of SRB. (C) 2017 Elsevier B.V. All rights reserved.

KeywordMicrobial Electrolysis Cell Neutral Red Graphite Felt Electron Transfer Efficiency Sulfate Removal Microbial Activity And Community
SubtypeArticle
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.cej.2017.06.086
Indexed BySCI
Language英语
WOS KeywordWASTE-WATER TREATMENT ; CARBON-FIBER FELT ; FUEL-CELLS ; CATHODE ; BIOFILM ; REDUCTION ; SYSTEMS ; WASTEWATERS ; PERFORMANCE ; ELECTRODES
WOS Research AreaEngineering
WOS SubjectEngineering, Environmental ; Engineering, Chemical
Funding OrganizationNational Natural Science Foundation of China(20877075) ; Open Funding Project of the National Key Laboratory of Biochemical Engineering ; National Key Technologies RD Program(2006BAC02A05) ; National Basic Research Program of China (973 Program)(2007CB613501)
WOS IDWOS:000408663800020
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/23194
Collection湿法冶金清洁生产技术国家工程实验室
Affiliation1.Zhejiang Univ, Inst Ind Ecol & Environm, Coll Chem & Biol Engn, Hangzhou 310027, Zhejiang, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, Beijing 100190, Peoples R China
3.Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Kai,Cao, Zhiqin,Chang, Junjun,et al. Promoted bioelectrocatalytic activity of microbial electrolysis cell (MEC) in sulfate removal through the synergy between neutral red and graphite felt[J]. CHEMICAL ENGINEERING JOURNAL,2017,327(NOV):183-192.
APA Wang, Kai.,Cao, Zhiqin.,Chang, Junjun.,Sheng, Yuxing.,Cao, Hongbin.,...&Xia, Zheng.(2017).Promoted bioelectrocatalytic activity of microbial electrolysis cell (MEC) in sulfate removal through the synergy between neutral red and graphite felt.CHEMICAL ENGINEERING JOURNAL,327(NOV),183-192.
MLA Wang, Kai,et al."Promoted bioelectrocatalytic activity of microbial electrolysis cell (MEC) in sulfate removal through the synergy between neutral red and graphite felt".CHEMICAL ENGINEERING JOURNAL 327.NOV(2017):183-192.
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