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[1]苏冰琴,林昱廷,宋秀兰,等.磁性纳米Fe3O4活化过一硫酸盐降解三氯生性能[J].中国给水排水,2021,37(15):89-94.
　SU Bing-qin,LIN Yu-ting,SONG Xiu-lan,et al.Degradation of Triclosan in Water by Magnetic Nanoscale Fe3O4 Activated Peroxymonosulfate[J].China Water & Wastewater,2021,37(15):89-94.

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磁性纳米Fe₃O₄活化过一硫酸盐降解三氯生性能

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第37卷期数: 2021年第15期页码: 89-94 栏目: 出版日期: 2021-08-01

Title:: Degradation of Triclosan in Water by Magnetic Nanoscale Fe3O4 Activated Peroxymonosulfate

作者:: 苏冰琴^1,2，林昱廷³，宋秀兰^1,2，刘一清^1,2，吕志超^1,2，芮创学⁴; (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.太原科技大学环境与安全学院，山西太原030024；4.山西嘉宝源科技有限公司，山西太原030006)

Author(s):: SU Bing-qin^1,2，LIN Yu-ting³，SONG Xiu-lan^1,2，LIU Yi-qing^1,2，Lü Zhi-chao^1,2，RUI Chuang-xue⁴; (1. School of Environmental Science and Engineering, Taiyuan University of Technology, Jinzhong 030600, China; 2. Shanxi Provincial Municipal Engineering Graduate Education Innovation Center, Jinzhong 030600, China; 3. School of Environment and Security, Taiyuan University of Science and Technology, Taiyuan 030024, China; 4. Shanxi Jiabaoyuan Technology Co. Ltd., Taiyuan 030006, China)

关键词:: 纳米Fe₃O₄; 过一硫酸盐; 三氯生; 硫酸根自由基; 降解效果

Keywords:: nanoscale Fe3O4; peroxymonosulfate; triclosan; sulfate radical; degradation effect

摘要:: 采用高级氧化技术磁性纳米Fe₃O₄活化过一硫酸盐（Fe₃O₄/PMS）降解水中三氯生（TCS），探讨了Fe₃O₄投加量、PMS浓度、初始pH值、共存阴离子（Cl^-、NO₃^-、CO₃^2-）和腐殖酸（HA）对TCS降解效果的影响，并对催化剂Fe₃O₄的稳定性和重复利用进行了考察。结果表明：Fe₃O₄/PMS会产生硫酸根自由基（SO₄^-·）降解水中TCS；适量增加Fe₃O₄投加量、提供适宜的PMS浓度可提高TCS降解率；酸性条件有利于TCS的降解；Cl^-和CO₃^2-对TCS降解具有较小的抑制作用，NO₃^-对TCS降解具有较小的促进作用；HA的存在对TCS降解有明显的抑制作用。实际水体中TCS降解效果受到碱度和有机质的抑制。XPS光谱分析结果表明，Fe₃O₄/PMS体系中Fe(Ⅱ)主要参与了激活PMS降解TCS过程。自由基鉴别结果显示，体系中SO₄^-·和羟基自由基（·OH）同时存在，其中SO₄^-·为参与反应的主要自由基。

Abstract:: The advanced oxidation process (AOPs) of magnetic nanoscale Fe₃O₄ activated peroxymonosulfate (Fe₃O₄/PMS) was employed to degrade triclosan (TCS) in water. Effects of Fe₃O₄dosage, PMS concentration, initial pH value, coexisting anions (Cl^-, NO₃^-, CO₃^2-) and humic acid (HA) on TCS degradation were investigated, and stability and recyclability of catalyst Fe₃O₄ were also explored. The results showed that，Fe₃O₄/PMS could generate SO₄^-· to decompose TCS in water. Higher Fe₃O₄ dosage and appropriate PMS concentration could increase the TCS degradation rate. Acidic condition was conducive to TCS degradation. Anions of Cl^-and CO₃^2- had little inhibitory effect on TCS degradation, while NO₃^-had slight promoting effect on TCS degradation. The degradation of TCS was obviously inhibited by the HA. The degradation performance of TCS in actual water was inhibited by alkalinity and organic matter. X-ray photoelectron spectroscopy (XPS) analysis showed that Fe²⁺ was mainly involved in the activation of PMS to degrade TCS in Fe₃O₄/PMS system. Identification test of free radicals revealed that SO₄^-· and ·OH coexisted in the system, and SO₄^-· was the dominant radical in the reaction.

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更新日期/Last Update: 2021-08-01