文献类型：期刊文献

英文题名：Degradation of Tetrabromobisphenol S by thermo-activated Persulphate Oxidation: reaction Kinetics, transformation Mechanisms, and brominated By-products

作者：Wang, Lu[1,2];Yu, Yaqun[2];Liu, Guoqiang[3];Hu, Baowei[1];Lu, Junhe[2]

机构：[1]Shaoxing Univ, Sch Life Sci, Shaoxing 312000, Peoples R China;[2]Nanjing Agr Univ, Dept Environm Sci & Engn, Nanjing 210095, Peoples R China;[3]Nanjing Inst Environm Sci, Minist Ecol & Environm China, Nanjing 210042, Peoples R China

年份：0

外文期刊名：ENVIRONMENTAL TECHNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000871366000001)、、EI(收录号：20224313010049)、Scopus(收录号：2-s2.0-85140362373)、WOS

基金：This work was supported by Tiansheng Education Foundation from Zhejiang Tiansheng Holding Group Co., Ltd.

语种：英文

外文关键词：Advanced oxidation processes; persulphate; sulphate radical; tetrabromobisphenol S; brominated by-products

外文摘要：Brominated flame retardants (BFRs) are a group of contaminants of emerging environmental concern. In this study, systematic exploration was carried out to investigate the degradation of tetrabromobisphenol S (TBBPS), a typical emerging BFRs, by thermally activated persulfate (PDS) oxidation. The removal of 5.0 mu M TBBPS was 100% after 60 min oxidation treatment under 60 degrees C. Increasing the temperature or initial PDS concentration facilitated the degradation efficiency of TBBPS. The quenching test indicated that TBBPS degradation occurred via the attack of both sulphate radicals and hydroxyl radicals. Natural organic matter (NOM) decreased the removal rate, however, complete disappearance of TBBPS could still be obtained. Six intermediate products were formed during reactions between TBBPS and radicals. Transformation pathways including debromination, beta-Scission, and cross-coupling were proposed. Brominated disinfection by-products (DBPs) in situ formed during the degradation of TBBPS were also investigated, such as bromoform and dibromoacetic acid. The presence of NOM reduced the formation rates of brominated DBPs. Results reveal that although thermo-activated PDS is a promising method for TBBPS-contaminated water, it can lead to potential brominated DBPs risks, which should be paid more attention to when SO4 center dot--based oxidation technology is applied.