氮掺杂纳米洋葱碳/PMS体系去除水中抗生素与抗性菌研究
Elimination of complex pollutants of antibiotics and antibiotic-resistant bacteria in water using magnetic nano onion carbon/PMS systems
胡莹 1蒋晓孟 2高豆豆 2俞梦飞 1沈柯妙 1甘慧慧1
作者信息
- 1. 宁波大学 土木工程与地理环境学院,浙江 宁波 315211
- 2. 宁波市政工程建设集团股份有限公司,浙江 宁波 315012
- 折叠
摘要
水环境中抗生素持续和长期残留将对细菌产生选择性压力,诱导产生抗性菌和抗生素抗性基因,对水体生态系统和人类健康带来威胁.本文采用具有磁性功能的氮掺杂纳米洋葱碳耦合过一硫酸盐氧化体系(NCNO/PMS),用于处理水中抗生素磺胺甲恶唑(SMX)和带有磺胺类抗生素抗性菌(ARB).通过X射线衍射(XRD)、透射电子显微镜(TEM)、磁滞回线等表征NCNO的表面结构和功能,考察不同环境条件下NCNO/PMS对水中SMX降解和ARB灭活效率的作用.实验结果表明,NCNO可以有效提升PMS对水中SMX降解的效率,同时NCNO/PMS对病原菌具有极强的灭活能力.
Abstract
The continuous and long-term residues of antibiotics in the aquatic environment are suggested to exert selective pressure on bacteria,induce the generation of resistant bacteria and antibiotic resistance genes,and bring threats to aquatic ecosystems and human health.In the present study,a magnetic nitrogen-doped nano-onion carbon coupled PMS oxidation system(NCNO/PMS)was used to treat the antibiotic sulfamethoxazole(SMX)and pathogens with sulfonamides resistance genes(ARB)in water at the same time.The surface structure and function of NCNO were analyzed by XRD,TEM and hysteresis loop characterization.The degradation efficiency of SMX in water and the inactivation efficiency of ARG by NCNO/PMS were investigated under different environmental conditions.The experimental results showed that NCNO could effectively improve the degradation efficiency of SMX in water by PMS.In addition,NCNO/PMS had excellent inactivation ability to pathogenic bacteria.This study provides a new idea and theoretical reference for the application and development of peroxymonosulfate oxidation technology for the removal of new biological risk pollutants.
关键词
磁性碳结构/抗生素/抗性菌/过一硫酸盐Key words
magnetic carbon structure/antibiotics/resistant bacteria/peroxymonosulfate引用本文复制引用
基金项目
宁波市水利科技计划重点项目(NSKA202210)
浙江省自然科学基金(LY21E090004)
国家自然科学基金(52070103)
出版年
2024
NETL
NSTL
万方数据