文献类型：期刊文献

中文题名：非均相催化氧化法降解水中诺氟沙星机理研究

英文题名：Degradation mechanism of norfloxacin in water by heterogeneous catalytic oxidation

作者：魏志远[1];张云霄[1];占锐[1];李嘉欣[1];张猛[1];刘莉莉[1,2]

机构：[1]华东理工大学资源与环境工程学院,上海200237;[2]上海有机固废生物转化工程技术研究中心,上海200241

年份：2022

卷号：42

期号：11

起止页码：122

中文期刊名：现代化工

外文期刊名：Modern Chemical Industry

收录：CSTPCD;;Scopus;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：国家重点研发计划(2018YFC1901000);上海有机固废生物转化工程技术研究中心开放课题(SERC2021C06)。

语种：中文

中文关键词：诺氟沙星;非均相催化氧化;影响因素;降解机理;降解途径

外文关键词：norfloxacin;heterogeneous catalytic oxidation;influencing factors;degradation mechanism;degradation pathway

摘要：诺氟沙星(NOR)是废水中最常见的氟喹诺酮类抗生素之一,其释放和累积会造成一系列生态和环境问题。以稳定、可回收的CoFe_(2)O_(4)纳米颗粒为非均相催化剂,在少量过一硫酸盐(PMS)投加条件下研究NOR的降解机理及效率影响因素。结果表明,在PMS浓度为0.5 mmol/L、CoFe_(2)O_(4)质量浓度为100 mg/L、pH=7、温度为25℃最佳反应条件下,30 min内NOR降解效率可达95.5%,反应速率常数约0.1054 min。经过4次循环实验,NOR降解率仍可达到65.5%。
Norfloxacin is one of the most frequently detected fluoroquinolones antibiotics in wastewater,the release and accumulation of norfloxacin will cause a series of ecological and environmental problems.Stable and recyclable CoFe_(2)O_(4) nanoparticles are used as a heterogeneous catalyst to investigate the degradation mechanism of norfloxacin under the condition of a small amount of peroxymonosulfate(PMS)dosage and the influencing factors for removal efficiency.The results indicate that the degradation efficiency of norfloxacin can reach 95.5%and the reaction rate constant is about 0.1054 minwithin 30 minutes when PMS dosage is 0.5 mmol·L^(-1),CoFe_(2)O_(4) dosage is 100 mg·L^(-1),pH=7,and temperature is 25℃.The degradation efficiency of norfloxacin still reaches 65.5%after the catalyst has been used for four cycle experiments.