Effects of enhanced coagulation on polar halogenated disinfection byproducts in drinking water

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL Separation and Purification Technology Pub Date : 2010-12-01 DOI:10.1016/j.seppur.2010.09.016

Feng Xiao, Xiangru Zhang, Hongyan Zhai, Mengting Yang, Irene M.C. Lo

{"title":"Effects of enhanced coagulation on polar halogenated disinfection byproducts in drinking water","authors":"Feng Xiao, Xiangru Zhang, Hongyan Zhai, Mengting Yang, Irene M.C. Lo","doi":"10.1016/j.seppur.2010.09.016","DOIUrl":null,"url":null,"abstract":"<div><p>Precursor ion scans using electrospray ionization-triple quadrupole mass spectrometry with or without ultra performance liquid chromatography preseparation were employed to examine the effects of enhanced/conventional coagulation on the formation of polar halogenated disinfection byproducts (DBPs) during chlorination. It is of interest that many new polar halogenated DBPs were generated as a consequence of enhanced or conventional coagulation, and a number of them were nitrogenous DBPs and/or had <em>m/z</em> values larger than 250. Some of the new polar halogenated DBPs showed up only in samples with enhanced coagulation but not in samples with conventional coagulation, although enhanced coagulation was better for controlling the overall DBP formation. The results suggest that the fraction of natural organic matter resistant to be removed by coagulation should have a low reaction potential with halogens; after enhanced or conventional coagulation, halogens are forced to react with the remaining fraction of natural organic matter, producing new polar (nitrogenous) halogenated DBPs. In addition, enhanced coagulation altered the speciation of halogenated DBPs by elevating the ratio of bromine-containing to chlorine-containing DBPs; this phenomenon was observed for both polar and apolar halogenated DBPs, but polar DBPs were more susceptible to be altered.</p></div>","PeriodicalId":427,"journal":{"name":"Separation and Purification Technology","volume":"76 1","pages":"Pages 26-32"},"PeriodicalIF":8.1000,"publicationDate":"2010-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.seppur.2010.09.016","citationCount":"37","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Separation and Purification Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S138358661000362X","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 37

Abstract

Precursor ion scans using electrospray ionization-triple quadrupole mass spectrometry with or without ultra performance liquid chromatography preseparation were employed to examine the effects of enhanced/conventional coagulation on the formation of polar halogenated disinfection byproducts (DBPs) during chlorination. It is of interest that many new polar halogenated DBPs were generated as a consequence of enhanced or conventional coagulation, and a number of them were nitrogenous DBPs and/or had m/z values larger than 250. Some of the new polar halogenated DBPs showed up only in samples with enhanced coagulation but not in samples with conventional coagulation, although enhanced coagulation was better for controlling the overall DBP formation. The results suggest that the fraction of natural organic matter resistant to be removed by coagulation should have a low reaction potential with halogens; after enhanced or conventional coagulation, halogens are forced to react with the remaining fraction of natural organic matter, producing new polar (nitrogenous) halogenated DBPs. In addition, enhanced coagulation altered the speciation of halogenated DBPs by elevating the ratio of bromine-containing to chlorine-containing DBPs; this phenomenon was observed for both polar and apolar halogenated DBPs, but polar DBPs were more susceptible to be altered.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

强化混凝对饮用水中极性卤化消毒副产物的影响

采用电喷雾电离-三重四极杆质谱联用或不联用超高效液相色谱预分离的前体离子扫描，研究了强化/常规混凝对氯化过程中极性卤化消毒副产物(DBPs)形成的影响。令人感兴趣的是，许多新的极性卤化dbp是由于增强或常规混凝而产生的，其中许多是含氮dbp和/或m/z值大于250。一些新的极性卤化DBP只在强化凝血的样品中出现，而在常规凝血的样品中没有出现，尽管强化凝血更有利于控制DBP的整体形成。结果表明，天然有机物中抗混凝去除的部分与卤素的反应电位较低;经过强化或常规混凝后，卤素被迫与天然有机物的剩余部分反应，产生新的极性(含氮)卤化dbp。此外，强化混凝通过提高含溴DBPs与含氯DBPs的比例改变了卤化DBPs的形态;极性卤化DBPs和极性卤化DBPs均存在这一现象，但极性DBPs更容易发生改变。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.