[口头报告]基于电极生物膜调控强化生物电化学系统处理有毒污染物的研究

基于电极生物膜调控强化生物电化学系统处理有毒污染物的研究
编号:3123 稿件编号:1598 访问权限:私有 更新:2023-04-20 22:48:20 浏览:155次 口头报告

报告开始:2023年05月07日 14:50 (Asia/Shanghai)

报告时间:10min

所在会议:[5B] 5B、环境科学 » [5B-3] 5B-3 环境科学

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摘要
The requirement of efficient and robust electrode biofilms is critically important to bioelectrochemical systems (BESs), especially for antibiotic wastewater treatment. In this study, different stratified extracellular polymeric substances (ALL-EPS, SEPS, LB-EPS and TB-EPS) extracted from sludge and corresponding EPS with N-acyl-homoserine lactones (AHLs) removed (ALL-EPS-1, SEPS-1, LB-EPS-1 and TB-EPS-1) were added with increasing concentrations of chloramphenicol (CAP) to investigate their effects on acclimation of anode biofilms in CAP-degrading microbial fuel cells (MFCs). The results revealed AHLs in stratified sludge EPS played a key role in facilitating self-assembly of anode biofilms, causing elevated power production and CAP elimination. The highest power density (498.17 mW/m2) and CAP removal rate (1.21 ± 0.04 mg/L·h) were attained in the TB-EPS MFC, which were 2.57 and 2.03 times higher than those in the TB-EPS-1 MFC, respectively. The superior physicochemical characteristics (3D porous structure, more biomass, stronger cell viability and more conductive substances in biofilm EPS) and mutualistic microbial community (richer biodiversity, more average microbial ratios, more bifunctional microbes and stronger positive microbial interactions) of the biofilms regulated by AHLs led to the outstanding performances. The findings provide new insights from quorum sensing into rapid start-up and stable operation of BESs for recalcitrant pollutant degradation.
关键字
电极生物膜,生物电化学系统;,有毒污染物
报告人
吴夏芫
南京工业大学

稿件作者
吴夏芫 南京工业大学
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