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现代化工  2022, Vol. 42 Issue (9): 97-101,108    DOI: 10.16606/j.cnki.issn0253-4320.2022.09.020
  科研与开发 本期目录 | 过刊浏览 | 高级检索 |
纳米Fe3O4活化过硫酸盐降解废水中诺氟沙星的研究
苏冰琴1,2, 刘一清1,2, 林昱廷1, 宋秀兰1,2, 李瑞1, 芮创学3
1. 太原理工大学环境科学与工程学院, 山西 晋中 030600;
2. 山西省市政工程研究生教育创新中心, 山西 晋中 030600;
3. 山西嘉宝源科技有限公司, 山西 太原 030006
Degradation mechanism of norfloxacin in wastewater by Fe3O4 nanoparticles activated persulfates
SU Bing-qin1,2, LIU Yi-qing1,2, LIN Yu-ting1, SONG Xiu-lan1,2, LI Rui1, RUI Chuang-xue3
1. College of Environmental Science and Engineering, Taiyuan University of Technology, Taiyuan 030600, China;
2. Graduate Education Innovation Center of Shanxi Institute of Municipal Engineering, Taiyuan 030600, China;
3. Shanxi Jiabaoyuan Technology Co., Ltd., Taiyuan 030006, China
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摘要 采用纳米Fe3O4活化KHSO5(PMS)的高级氧化工艺降解废水中诺氟沙星(NOR)。考察了Fe3O4质量浓度、PMS浓度、初始pH等对诺氟沙星降解效果的影响,探究了催化剂Fe3O4的重复利用效果。结果表明,诺氟沙星初始质量浓度为 5.0 mg/L、Fe3O4质量浓度为2.0 g/L、PMS浓度为0.8 mmol/L、初始pH为7.0、温度为30℃的优化条件下,反应120 min后诺氟沙星的降解率达到96.6%,降解速率常数Kobs为0.030 3 min-1,降解过程符合一级反应动力学。EPR实验证实反应体系中降解诺氟沙星的主导作用源于SO-4·。通过LC-MS分析推测了诺氟沙星的降解路径和反应机理。
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苏冰琴
刘一清
林昱廷
宋秀兰
李瑞
芮创学
关键词:  诺氟沙星  活化过硫酸盐  纳米Fe3O4  活性自由基  降解机制    
Abstract: The advanced oxidation process employing Fe3O4 nanoparticles activated peroxymonosulfate (Fe3O4/PMS) is used to degrade norfloxacin (NOR) in wastewater.The effects of Fe3O4 dosage,PMS concentration,and initial pH value on the degradation of norfloxacin are investigated.The recyclability of Fe3O4 catalyst are also explored.It is found that the degradation rate of norfloxacin reaches 96.6% with an apparent rate constant (Kobs) of 0.030 3 min-1 when the initial concentration of norfloxacin is 5.0 mg·L-1,Fe3O4 dosage is 2.0 g·L-1,PMS concentration is 0.8 mmol·L-1,pH value is 7.0,reaction temperature is 30℃ and the reaction has performed for 2 hours.The degradation reaction kinetics of norfloxacin follows the first-order reaction.EPR experiments confirm that SO-4· is dominant in the degradation of norfloxacin.The degradation pathways and mechanism of norfloxacin are inferred through LC-MS.
Key words:  norfloxacin    activated peroxymonosulfate    Fe3O4 nanoparticles    active radical    degradation mechanism
收稿日期:  2021-09-04      修回日期:  2022-07-14           出版日期:  2022-09-20
ZTFLH:  X703.1  
基金资助: 国家自然科学基金资助项目(22008167);山西省自然科学基金资助项目(201801D121274);国家大学生创新创业项目(202010112010)
通讯作者:  苏冰琴(1972-),女,博士,副教授,研究方向为废水处理理论与技术,通讯联系人,subingqin@tyut.edu.cn    E-mail:  subingqin@tyut.edu.cn
引用本文:    
苏冰琴, 刘一清, 林昱廷, 宋秀兰, 李瑞, 芮创学. 纳米Fe3O4活化过硫酸盐降解废水中诺氟沙星的研究[J]. 现代化工, 2022, 42(9): 97-101,108.
SU Bing-qin, LIU Yi-qing, LIN Yu-ting, SONG Xiu-lan, LI Rui, RUI Chuang-xue. Degradation mechanism of norfloxacin in wastewater by Fe3O4 nanoparticles activated persulfates. Modern Chemical Industry, 2022, 42(9): 97-101,108.
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https://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2022.09.020  或          https://www.xdhg.com.cn/CN/Y2022/V42/I9/97
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