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 15):89-94.
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Degradation of Triclosan in Water by Magnetic Nanoscale Fe3O4 Activated Peroxymonosulfate

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 15 15 Page: 89-94 Column: Date of publication: 2021-08-01
Author(s):
SU Bing-qin1; 2; LIN Yu-ting3; SONG Xiu-lan1; 2; LIU Yi-qing1; 2; Lü Zhi-chao1; 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)
Keywords:
nanoscale Fe3O4; peroxymonosulfate; triclosan; sulfate radical; degradation effect
Abstract:
The advanced oxidation process (AOPs) of magnetic nanoscale Fe3O4 activated peroxymonosulfate (Fe3O4/PMS) was employed to degrade triclosan (TCS) in water. Effects of Fe3O4 dosage, PMS concentration, initial pH value, coexisting anions (Cl-, NO3-, CO32-) 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 CO32- 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.
Last Update: 2021-08-01