4.7 Article

Photoelectrocatalytic coupling system synergistically removal of antibiotics and antibiotic resistant bacteria from aquatic environment

期刊

JOURNAL OF HAZARDOUS MATERIALS
卷 424, 期 -, 页码 -

出版社

ELSEVIER
DOI: 10.1016/j.jhazmat.2021.127553

关键词

Photoelectrocatalysis; Antibiotic resistant bacteria; Antibiotic resistant genes; Ecotoxicity; Kinetics and mechanism

资金

  1. National Natural Science Foun-dation of China [51878321, 21866017, 41761092]
  2. Applied Basic Research Foundation of Yunnan Province [2018FA007]

向作者/读者索取更多资源

This study constructed an efficient photoelectrocatalytic system using TiO2 nanotube arrays decorated with Ag/SnO2-Sb nanoparticles as the anode and Ti-Pd/SnO2-Sb as the cathode. The system showed high removal efficiency of antibiotics, antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) in reclaimed water, while also reducing the ecotoxicity of chloramphenicol (CAP) solution. The study provides a potential alternative method for controlling antibiotic resistance and protecting the quality of reclaimed water.
Antibiotics, antibiotic resistant bacteria (ARB) and antibiotic resistance genes (ARGs) are ubiquitous in the reclaimed water, posing a potential threat to human and ecological health. Nowadays, the reuse technology of reclaimed water has been widely concerned, but the removal of antibiotics, ARB and ARGs in reclaimed water has not been sufficiently studied. This study used TiO2 nanotube arrays (TNTs) decorated with Ag/SnO2-Sb nanoparticles (TNTs-Ag/SnO2-Sb) as the anode and Ti-Pd/SnO2-Sb as the cathode to construct an efficient photoelectrocatalytic (PEC) system. In this system, 99.9% of ARB was inactivated in 20 min, meanwhile, ARGs was removed within 30 min, and antibiotics were almost completely degraded within 1 h. Furthermore, the effects of system parameters on the removals of antibiotics, ARB and ARGs were also studied. The redox performance of the system was verified by adding persulfate. Escherichia coli, as a representative microorganism in aquatic environments, was used to evaluate the ecotoxicity of PEC treated chloramphenicol (CAP) solution. The ecotoxicity of CAP solution was significantly reduced after being treated by PEC. In addition, transformation intermediates of CAP were identified using liquid chromatography-tandems mass spectrometry (LC-MS/MS) and the possible degradation pathways were proposed. This study could provide a potential alternative method for controlling antibiotic resistance and protecting the quality of reclaimed water.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.7
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据