Cathodic degradation of antibiotics: Characterization and pathway analysis
文献类型：期刊论文
| 作者 | Kong, Deyong; Liang, Bin; Yun, Hui; Cheng, Haoyi; Ma, Jincai; Cui, Minhua; Wang, Aijie; Ren, Nanqi |
| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2015-04-01 |
| 卷号 | 72期号:0页码:281-292 |
| 关键词 | Antibiotics Degradation Cathode Potential Nitro Group Reduction Dehalogenation Antibacterial Activity Elimination |
| 英文摘要 | Antibiotics in wastewaters must be degraded to eliminate their antibacterial activity before discharging into the environment. A cathode can provide continuous electrons for the degradation of refractory pollutants, however the cathodic degradation feasibility, efficiency and pathway for different kinds of antibiotics is poorly understood. Here, we investigated the degradation of four antibiotics, namely nitrofurazone (NFZ), metronidazole (MNZ), chloramphenicol (CAP), and florfenicol (PLO) by a poised cathode in a dual chamber electrochemical reactor. The cyclic voltammetry preliminarily proved the feasibility of the cathodic degradation of these antibiotics. The cathodic reducibility of these antibiotics followed the order of NPZ > MNZ > CAP > PLO. A decreased phosphate buffered solution (PBS) concentration as low as 2 mM or utilization of NaCl buffer solution as catholyte had significant influence on antibiotics degradation rate and efficiency for CAP and PLO but not for NFZ and MNZ. PBS could be replaced by Na2CO3-NaHCO3 buffer solution as catholyte for the degradation of these antibiotics. Reductive dechlorination of CAP proceeded only after the reduction of the nitro group to aromatic amine. The composition of the degradation products depended on the cathode potential except for MNZ. The cathodic degradation process could eliminate the antibacterial activity of these antibiotics. The current study suggests that the electrochemical reduction could serve as a potential pretreatment or advanced treatment unit for the treatment of antibiotics containing wastewaters. (C) 2015 Elsevier Ltd. All rights reserved. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences ; Water Resources |
| WOS记录号 | WOS:000353605000022 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/32914]  |
| 专题 | 生态环境研究中心_中国科学院环境生物技术重点实验室 |
| 推荐引用方式 GB/T 7714 | Kong, Deyong,Liang, Bin,Yun, Hui,et al. Cathodic degradation of antibiotics: Characterization and pathway analysis[J]. WATER RESEARCH,2015,72(0):281-292. |
| APA | Kong, Deyong.,Liang, Bin.,Yun, Hui.,Cheng, Haoyi.,Ma, Jincai.,...&Ren, Nanqi.(2015).Cathodic degradation of antibiotics: Characterization and pathway analysis.WATER RESEARCH,72(0),281-292. |
| MLA | Kong, Deyong,et al."Cathodic degradation of antibiotics: Characterization and pathway analysis".WATER RESEARCH 72.0(2015):281-292. |
入库方式： OAI收割
来源：生态环境研究中心
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