文献类型：期刊文献

英文题名：Formation of brominated by-products during the degradation of tetrabromobisphenol S by Co2+/peroxymonosulfate oxidation

作者：Wang, Lu[1,2];Yu, Yaqun[2];Liu, Guoqiang[3];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]Minist Ecol & Environm China, Nanjing Inst Environm Sci, Nanjing 210042, Peoples R China

年份：2022

卷号：314

外文期刊名：JOURNAL OF ENVIRONMENTAL MANAGEMENT

收录：SCI-EXPANDED(收录号：WOS:000804381000003)、、WOS

基金：This research was supported in part by the Tiansheng Education Foundation from Zhejiang Tiansheng Holding Group Co., Ltd.

语种：英文

外文关键词：Tetrabromobisphenol S; Peroxymonosulfate; Sulfate radical; Brominated disinfection by-products

外文摘要：Tetrabromobisphenol S (TBBPS), an emerging brominated flame retardant, can cause neurotoxic and cytotoxic effects to human physiology. In this study, the degradation of TBBPS in Co2+ activated peroxymonosulfate (PMS) oxidation process was explored. In particular, brominated by-products formed during the degradation of the TBBPS were examined. It was found that TBBPS could be effectively removed in the Co2+/PMS oxidation process. The pseudo-first-order rate constants were 0.13 minxe213; 1 at 0.2 mM PMS and 0.5 mu M Co2+ initially. It appeared that TBBPS degradation occurred via xfffc; and HO center dot attacks, but xfffc; played a dominant role. The presence of natural organic matter (NOM) greatly inhibited the transformation of the TBBPS, which can be explained by the scavenging of the radical species. xfffc; beta-Scission, debromination, and cross-coupling were identified as the main reaction pathways of TBBPS degradation in the Co2+/PMS system. Further oxidation and ring-opening of the intermediates generated brominated by-products including bromoform, monobromoacetic acid, and dibromoacetic acid. The formation of the brominated by-products increased gradually in approximately 48 h. But, the presence of NOM reduced the yields of the brominated -by-products. The findings of this study indicate that organic bromine contaminants can be effectively removed but lead to brominated by-products in the activated PMS oxidation process, which should be taken into consideration when xfffc; -based oxidation technology is applied.