globalchange  > 气候变化与战略
DOI: 10.1016/j.scib.2020.07.015
论文题名:
Mechanistic insights for efficient inactivation of antibiotic resistance genes: a synergistic interfacial adsorption and photocatalytic-oxidation process
作者: Zhou Z.; Shen Z.; Cheng Z.; Zhang G.; Li M.; Li Y.; Zhan S.; Crittenden J.C.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2020
卷: 65, 期:24
起始页码: 2107
结束页码: 2119
语种: 英语
中文关键词: Antibiotic resistance genes (ARGs) ; Interfacial behaviors ; Synergistic adsorption and photocatalytic oxidation ; Trace contaminants
英文关键词: Adsorption ; Antibiotics ; Catalysts ; Effluents ; Fluorine compounds ; Genes ; Health risks ; Hydrogen bonds ; Ionization of gases ; Mineralogy ; Oxygen ; Phase interfaces ; Wastewater treatment ; Water filtration ; Advanced oxidation process ; Antibiotic resistance genes ; Antibiotic-resistant bacteria ; Environmental concerns ; Interfacial adsorption ; Photocatalytic oxidations ; Polyvinylidene fluorides ; Ultra-filtration membranes ; Oxidation
英文摘要: Advanced oxidation processes (AOPs) have been applied to address multiple environmental concerns including antibiotic resistance genes (ARGs). ARGs have shown an increasing threat to human health, and they are either harbored by antibiotic-resistant bacteria (ARB) or free in the environment. However, the control of ARGs has been substantially limited by their low concentration and the limited knowledge about their interfacial behavior. Herein, a novel AOP catalyst, Ag/TiO2/graphene oxide (GO), combined with a polyvinylidene fluoride (PVDF) ultrafiltration membrane was designed with a synergistic interfacial adsorption and oxidation function to inactivate ARGs with high efficiency in both model solutions and in secondary wastewater effluent, especially when the residue concentration was low. Further analysis showed that the mineralization of bases and phosphodiesters mainly caused the inactivation of ARGs. Moreover, the interfacial adsorption and oxidation processes of ARGs were studied at the molecular level. The results showed that GO was rich in sp2 backbones and functional oxygen groups, which efficiently captured and enriched the ARGs via π-π interactions and hydrogen bonds. Therefore, the photogenerated active oxygen species attack the ARGs by partially overcoming the kinetic problems in this process. The Ag/TiO2/GO catalyst was further combined with a PVDF membrane to test its potential in wastewater treatment applications. This work offers an efficient method and a corresponding material for the inactivation and mineralization of intra/extracellular ARGs. Moreover, the molecular-level understanding of ARG behaviors on a solid–liquid interface will inspire further control strategies of ARGs in the future. © 2020 Science China Press
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170184
Appears in Collections:气候变化与战略

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作者单位: MOE Key Laboratory of Pollution Processes and Environmental Criteria, Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300350, China; School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China; Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, 300071, China; School of Civil and Environmental Engineering, Harbin Institute of Technology, Shenzhen (HITSZ), Shenzhen, 518055, China; Tianjin Key Laboratory of Molecular Optoelectronic Sciences, Department of Chemistry, School of Science, Tianjin University, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, 300072, China; Tianjin Key Laboratory for Rare Earth Materials and Applications, Tianjin, 300072, China; School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, United States

Recommended Citation:
Zhou Z.,Shen Z.,Cheng Z.,et al. Mechanistic insights for efficient inactivation of antibiotic resistance genes: a synergistic interfacial adsorption and photocatalytic-oxidation process[J]. Science Bulletin,2020-01-01,65(24)
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