DOI: 10.1016/j.watres.2017.11.032
Scopus记录号: 2-s2.0-85034452420
论文题名: Deiodination of iopamidol by zero valent iron (ZVI) enhances formation of iodinated disinfection by-products during chloramination
作者: Dong H. ; Qiang Z. ; Lian J. ; Li J. ; Yu J. ; Qu J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 129 起始页码: 319
结束页码: 326
语种: 英语
英文关键词: Chloramination
; Iodinated disinfection by-products
; Iopamidol
; ZVI
Scopus关键词: Amination
; Byproducts
; Cast iron
; Chlorine compounds
; Contrast media
; Disinfection
; Chloramination
; Haloacetic acids
; Iodinated disinfection by-products
; Iodinated trihalomethanes
; Iodinated X-ray contrast media
; Iopamidol
; Pseudo first-order kinetics
; Unlined cast iron
; Water distribution systems
; acetic acid
; chloride
; haloacetic acid
; iodoacetic acid
; iopamidol
; iron
; monochloramine
; sulfate
; trihalomethane
; unclassified drug
; water
; chloramine derivative
; contrast medium
; iopamidol
; iron
; tosylchloramide sodium
; chemical compound
; chemical reaction
; disinfection
; iron nanoparticle
; pH
; pollutant removal
; reaction kinetics
; transformation
; water treatment
; amination
; Article
; chloramination
; deiodination
; disinfection
; hydrogenation
; pH
; priority journal
; reaction time
; water supply
; chemistry
; disinfection
; halogenation
; kinetics
; water management
; water pollutant
; Chloramines
; Contrast Media
; Disinfection
; Halogenation
; Iopamidol
; Iron
; Kinetics
; Trihalomethanes
; Water Pollutants, Chemical
; Water Purification
英文摘要: Iodinated X-ray contrast media (ICM) is considered as one of iodine sources for formation of toxic iodinated disinfection byproducts (I-DBPs) during disinfection. This study investigated transformation of a typical ICM, iopamidol (IPM) by zero valent iron (ZVI) and the effect of transformation on the formation of I-DBPs during chloramination. It was found that the presence of ZVI could deiodinate IPM into I− and the transformation of IPM exhibited a pseudo-first-order kinetics. Acidic circumstance, SO4 2−, Cl− and monochloramine could promote the transformation of IPM by ZVI, while SiO3 2− inhibited the transformation of IPM. Moreover, the transformation of IPM by ZVI changed both the formed species and amounts of I-DBPs during chloramination. During the chloramination of IPM-containing water, CHCl2I and iodoacetic acid were the predominant iodinated trihalomethanes (I-THMs) and iodinated haloacetic acids (I-HAAs), respectively in the absence of ZVI, while CHI3 and triiodoacetic acid became the predominant ones with 1.0 g L−1 ZVI. The addition of 5.0 g L−1 ZVI increased I-DBPs formation amounts by 6.0 folds after 72 h and maximum formation of I-DBPs occurred at pH 5.0. Enhanced I-DBPs formation was also observed with various real water sources. Given that ZVI ubiquitously exists in the unlined cast iron distribution pipes, the deiodination of IPM by ZVI during distribution may increase the formation of I-DBPs, which needs receive enough attention. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113099
Appears in Collections: 气候减缓与适应
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作者单位: Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 18 Shuang-qing Road, Beijing, 100085, China; School of Architectural, Surveying and Mapping Engineering, Jiangxi University of Science and Technology, 86 Hong-qi Road, Ganzhou, 341000, China; School of Environmental Science and Engineering, Qingdao University, 308 Ning-xia Road, Qingdao, 266071, China
Recommended Citation:
Dong H.,Qiang Z.,Lian J.,et al. Deiodination of iopamidol by zero valent iron (ZVI) enhances formation of iodinated disinfection by-products during chloramination[J]. Water Research,2018-01-01,129