Removal of tetracycline-resistant Escherichia coli and its genes through ultrasound treatment combined with ultraviolet light emitting diodes
文献类型：期刊论文
| 作者 | Zhou, Xiaoqin; Tian, Chenxin; Zhao, Meijuan; Yu, Peng; Zheng, Tianlong; Li, Zifu; Wang, Hongwu |
| 刊名 | ENVIRONMENTAL RESEARCH
 |
| 出版日期 | 2021-06 |
| 卷号 | 197页码:- |
| ISSN号 | 0013-9351 |
| 关键词 | UV-LEDs disinfection Ultrasound enhancement Antibiotic-resistant bacteria Antibiotic-resistant gene |
| 英文摘要 | Antibiotic resistance has gained increasing attention worldwide, and wastewater treatment plants have been regarded as hotspots for antibiotic-resistant bacteria and antibiotic-resistant genes (ARGs). In this study, we evaluated the removal of tetracycline-resistant Escherichia coli and its related genes through ultrasound (US) treatment with different input levels of US-specific energy combined with ultraviolet light emitting diodes (UVLEDs). Simultaneous US with UV-LEDs effectively eliminated tetracycline-resistant E. coli with the normal suggested UV-LEDs dosage (below 30 mJ/cm2). The removal efficiency increased with the addition of US (specific input energy of 8-16 kJ/L), and simultaneous US treatment with UV-LEDs was relatively more effective than US pretreatment. Analyses of cell damage by K+ leakage and flow cytometry showed that the cell wall kept its integrity during the applied treatment conditions. Consequently, the removal efficiencies of 16 S rRNA, tet M, and tet Q were unsatisfactory because less than 1 log reduction was achieved. Increasing the US energy remarkably damaged the cell wall and potentially promoted the reaction. The removal of ARGs increased four times when using US-specific input energy at 330 kJ/L with 5 mJ/cm2 compared with UV-LEDs alone. The US treatment combined with UV-LEDs is a novel process that does not require chemicals. Results of this research can provide theoretical support for the removal of ARGs. |
| WOS研究方向 | Environmental Sciences ; Public, Environmental & Occupational Health |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46067]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, 18 Shuangqing Rd, Beijing 100085, Peop 2.Tongji Univ, Sch Environm Sci & Engn, Shanghai 200092, Peoples R China 3.Univ Sci & Technol Beijing, Sch Energy & Environm Engn, Beijing Key Lab Resource Oriented Treatment Ind P, Beijing 100083, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Xiaoqin,Tian, Chenxin,Zhao, Meijuan,et al. Removal of tetracycline-resistant Escherichia coli and its genes through ultrasound treatment combined with ultraviolet light emitting diodes[J]. ENVIRONMENTAL RESEARCH,2021,197:-. |
| APA | Zhou, Xiaoqin.,Tian, Chenxin.,Zhao, Meijuan.,Yu, Peng.,Zheng, Tianlong.,...&Wang, Hongwu.(2021).Removal of tetracycline-resistant Escherichia coli and its genes through ultrasound treatment combined with ultraviolet light emitting diodes.ENVIRONMENTAL RESEARCH,197,-. |
| MLA | Zhou, Xiaoqin,et al."Removal of tetracycline-resistant Escherichia coli and its genes through ultrasound treatment combined with ultraviolet light emitting diodes".ENVIRONMENTAL RESEARCH 197(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。