Enhanced formation of bromate and brominated disinfection byproducts during chlorination of bromide-containing waters under catalysis of copper corrosion products

doi:10.1016/j.watres.2016.04.033

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院饮用水科学与技术重点实验室

	Enhanced formation of bromate and brominated disinfection byproducts during chlorination of bromide-containing waters under catalysis of copper corrosion products
	Hu, Jun; Qiang, Zhimin; Dong, Huiyu; Qu, Jiuhui
刊名	WATER RESEARCH
	2016-07-01
卷号	98 期号:0 页码:302-308
关键词	Copper Corrosion Products Catalysis Bromate Brominated Disinfection Byproducts Water Pipe
DOI	10.1016/j.watres.2016.04.033
英文摘要	Copper corrosion products (CCPs) in water distribution pipes may catalyze the reactions among disinfectant, natural organic matter (NOM), and bromide (Br-). This study investigated the simultaneous formation of bromate (BrO3-) and brominated disinfection byproducts (Br-DBPs) during chlorination of Br--containing waters in the presence of three CCPs (i.e., CuO, Cu2O, and Cu2+). In a synthetic water, both oxidant decay and BrO3- formation were enhanced by CCPs, whereas the presence of humic acid (HA) significantly inhibited BrO3- formation due to its competition for HOBr to form Br-DBPs. In the HOCl-Br--CuO system, the BrO3- yield increased obviously with increasing CuO dose and initial Br- concentration, while the catalytic formation of Br-DBPs was rather limited. A molar conversion (Br- to BrO3-) of 22.1% was observed under CuO catalysis, compared with little conversion in the absence of CuO. In the HOCl-Br--Cu2O/Cu2+ systems, Cu2O or Cu2+ mainly enhanced the formation of Br-DBPs, with enhancement ratios of 69.9% and 50.1%, respectively. The degree of enhancement on Br-DBPs formation became more apparent with increasing pH, while that on BrO3- formation reached maximal at pH 7.6. The catalytic formation of Br-DBPs and BrO3- by CCPs was also verified in three filtered real waters, although to a lesser extent because of the water matrix effect. In mechanism, the CCPs promoted the formation of BrO3- and Br-DBPs through catalyzing the HOBr disproportionation pathway and the reaction of HOBr toward HA, respectively. (C) 2016 Elsevier Ltd. All rights reserved.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/36178]
专题	生态环境研究中心_中国科学院饮用水科学与技术重点实验室
推荐引用方式 GB/T 7714	Hu, Jun,Qiang, Zhimin,Dong, Huiyu,et al. Enhanced formation of bromate and brominated disinfection byproducts during chlorination of bromide-containing waters under catalysis of copper corrosion products[J]. WATER RESEARCH,2016,98(0):302-308.
APA	Hu, Jun,Qiang, Zhimin,Dong, Huiyu,&Qu, Jiuhui.(2016).Enhanced formation of bromate and brominated disinfection byproducts during chlorination of bromide-containing waters under catalysis of copper corrosion products.WATER RESEARCH,98(0),302-308.
MLA	Hu, Jun,et al."Enhanced formation of bromate and brominated disinfection byproducts during chlorination of bromide-containing waters under catalysis of copper corrosion products".WATER RESEARCH 98.0(2016):302-308.