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Mutual effect between electrochemically active bacteria (EAB) and azo dye in bio-electrochemical system (BES)
Cui, Dan; Cui, Min-Hua; Liang, Bin; Liu, Wen-Zong; Tang, Zi-En; Wang, Ai-Jie
2020-01
Source PublicationCHEMOSPHERE
ISSN0045-6535
Volume239Pages:1-23
AbstractHerein, the mutual effect between azo dye and the performance of electrochemically active bacteria (EAB) is investigated in detail, which is crucial to understand and control the bio-electrochemical systems (BESs) operation for azo dye containing wastewater treatment. EAB is enriched at controlled potential of -0.2 V vs Ag/AgCl in single-chamber BESs. Over 95% azo dye (alizarin yellow R (AYR)) was decolorized regardless of the initial AYR concentration ranging from 30 to 120 mg/L within 24 h. The fastest decolorization rate was obtained at AYR initial concentration of 70 mg/L, which was 4.25 times greater in the closed circuit BESs than that in the open circuit one. 16S rRNA gene based microbial community analysis showed that Geobacter was dominant in EAB with relative abundance increased from 77.98% (0 mg/L AYR) to 92.22% (70 mg/L AYR), indicating that azo dye selectively boosts the growth of exoelectrogens in electrode biofilm communities. Under electricity stimulation, extracellular process can be mutually conducted by azo dye compounds, which is favorable for accelerating reaction rate and avoiding of significant toxic effect on EAB. (C) 2019 Elsevier Ltd. All rights reserved.
Department中国科学院环境生物技术重点实验室
KeywordElectrochemically active bacteria (EAB) Azo dye Bio-electrochemical systems (BESs) Wastewater
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/45188
Collection中国科学院环境生物技术重点实验室
Recommended Citation
GB/T 7714
Cui, Dan,Cui, Min-Hua,Liang, Bin,et al. Mutual effect between electrochemically active bacteria (EAB) and azo dye in bio-electrochemical system (BES)[J]. CHEMOSPHERE,2020,239:1-23.
APA Cui, Dan,Cui, Min-Hua,Liang, Bin,Liu, Wen-Zong,Tang, Zi-En,&Wang, Ai-Jie.(2020).Mutual effect between electrochemically active bacteria (EAB) and azo dye in bio-electrochemical system (BES).CHEMOSPHERE,239,1-23.
MLA Cui, Dan,et al."Mutual effect between electrochemically active bacteria (EAB) and azo dye in bio-electrochemical system (BES)".CHEMOSPHERE 239(2020):1-23.
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