文献类型：期刊文献

英文题名：Dynamic evolution of electrochemical and biological features in microbial fuel cells upon chronic exposure to increasing oxytetracycline dosage

作者：Zhang, Jing[1,2];Chu, Liangliang[1,3];Wang, Zongwu[1,4];Guo, Wei[5];Zhang, Xiao[1,1];Chen, Ruyan[1];Dong, Shuying[1];Sun, Jianhui[1]

第一作者：Zhang, Jing

通讯作者：Dong, SY[1];Sun, JH[1]

机构：[1]Henan Normal Univ, Key Lab Yellow River & Huai River Water Environm, Henan Key Lab Environm Pollut Control, Sch Environm,Minist Educ, Xinxiang 453007, Henan, Peoples R China;[2]Sanmenxia Polytech, Sanmenxia 472000, Henan, Peoples R China;[3]Xinxiang Univ, Xinxiang 453007, Henan, Peoples R China;[4]Henan Engn Technol Res Ctr Green Coating Mat, Yellow River Conservancy Tech Inst, Dept Environm Engn, Kaifeng 475004, Henan, Peoples R China;[5]Xinxiang Med Univ, Dept Chem, Xinxiang 453003, Henan, Peoples R China

第一机构：Henan Normal Univ, Key Lab Yellow River & Huai River Water Environm, Henan Key Lab Environm Pollut Control, Sch Environm,Minist Educ, Xinxiang 453007, Henan, Peoples R China

通讯机构：[1]corresponding author), Henan Normal Univ, Key Lab Yellow River & Huai River Water Environm, Henan Key Lab Environm Pollut Control, Sch Environm,Minist Educ, Xinxiang 453007, Henan, Peoples R China.

年份：2020

卷号：136

外文期刊名：BIOELECTROCHEMISTRY

收录：;EI(收录号：20203309042526);Scopus(收录号：2-s2.0-85089211716);WOS:【SCI-EXPANDED(收录号:WOS:000579732600025)】；

基金：This work was supported by the National Natural Science Foundation of China (Grants No. 21677047 and 51808199), the China Postdoctoral Science Foundation (Grant No. 2018M630825 and 2019T120624), Plan for University Scientific Innovation Talent of Henan Province (19HASTIT046), the Innovation Scientists and Technicians Troop Construction Projects of Henan Province, PR China. The authors also appreciate for the support from the Fund for Excellent Young Scholars (20180545) of Henan Normal University for the PhD. The Scientific and Technological Research Projects of Henan Province, China (Grant No. 172102210449 and 192102310176).

语种：英文

外文关键词：Microbial fuel cell (MFC); Long-term operation; Oxytetracycline (OTC); Microbial community; Electrochemical properties

摘要：Dynamic changes in power generation and electrochemical properties were compared between the control microbial fuel cells (C-MFC) and an oxytetracycline (OTC)-treated MFC (O-MFC) on days 84, 139, 174, 224, 295, 307 and 353. The results showed that a high concentration of OTC (>5 mg.L-1) could inhibit microbial activity and result in a decline of voltage output and power density compared with the same C-MFC. However, with the prolongation of incubation time, the inhibitory effect was gradually weakened. Electrochemical analyses demonstrated that long-term OTC acclimation reduced the ohmic and polarisation resistance of the anode, which was conducive to the recovery of electrochemical performance. More than 99% of 10 mg.L-1 OTC could be removed within 48 h, and the antibacterial activity of the MFC effluent on Escherichia coli DH5 alpha was conclusively eliminated. High-throughput sequencing analysis revealed that the diversity and richness of the microbial community decreased significantly after long-term OTC enrichment. Acinetobacter, Petrimonas, Spirochaetaceae and Delftia were enriched and played a dominant role in C-MFC stability and power generation. The promotion by Cupriavidus, Geobacter and Stenotrophomonas in simultaneous OTC degradation and bioelectricity generation in the O-MFC was demonstrated. (C) 2020 Published by Elsevier B.V.