Chloramination of iopamidol- and bromide-spiked waters containing natural organic matter

Iopamidol (an iodinated X-ray contrast medium) and bromide are precursors in the formation of halogenated disinfection byproducts (DBPs). The interactions of these precursors are vital to elucidate the formation of halogenated DBPs during chloramination. This work investigated the formation of total...

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Autores principales:	Nana Osei B. Ackerson, Hannah K. Liberatore, Susan D. Richardson, Michael J. Plewa, Thomas A. Ternes, Stephen E. Duirk
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	bromide disinfection byproducts iopamidol monochloramine source water total organic halogen Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
Acceso en línea:	https://doaj.org/article/56de9f9a265046b98e097cf6b79563a2
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spelling	oai:doaj.org-article:56de9f9a265046b98e097cf6b79563a22021-11-06T07:09:59ZChloramination of iopamidol- and bromide-spiked waters containing natural organic matter1606-97491607-079810.2166/ws.2020.360https://doaj.org/article/56de9f9a265046b98e097cf6b79563a22021-03-01T00:00:00Zhttp://ws.iwaponline.com/content/21/2/886https://doaj.org/toc/1606-9749https://doaj.org/toc/1607-0798Iopamidol (an iodinated X-ray contrast medium) and bromide are precursors in the formation of halogenated disinfection byproducts (DBPs). The interactions of these precursors are vital to elucidate the formation of halogenated DBPs during chloramination. This work investigated the formation of total organic halogen and select individual DBPs in two laboratory-chloraminated source waters containing iopamidol and bromide. Experiments were carried out in batch reactors containing Barberton source water (BSW) and Cleveland BSW (CSW), spiked with iopamidol (5 μM), bromide (15 μM), and 100 μM monochloramine. Total organic iodine concentrations were approximately equal regardless of source water since they are mostly unreacted iopamidol and iopamidol DBPs. Almost equal amounts of total organic chlorine (3–4 nM) were produced in the source waters, but higher quantities of total organic bromine were formed in BSW than CSW. Substantial quantities of regulated trihalomethanes (THMs) and haloacetic acids (HAAs) were formed in the source waters, along with appreciable concentrations of iodinated trihalomethanes (CHBrClI, CHCl2I, and CHBr2I). Low concentrations of iodo-HAAs were detected, especially at low pH. Overall, bromide concentrations appeared to suppress iodo-DBP formation during chloramination of iopamidol in the presence of natural organic matter. A good correlation (R2 = 0.801) between the yields of regulated DBPs and iodo-DBPs was observed. HIGHLIGHTS Bromide suppressed the formation of iodo-THMs without bromine atoms.; Approximately equal quantities of total organic chlorine were formed regardless of NOM characteristics.; Iodoacetic acids showed substantial formation at low pH irrespective of NOM.;Nana Osei B. AckersonHannah K. LiberatoreSusan D. RichardsonMichael J. PlewaThomas A. TernesStephen E. DuirkIWA Publishingarticlebromidedisinfection byproductsiopamidolmonochloraminesource watertotal organic halogenWater supply for domestic and industrial purposesTD201-500River, lake, and water-supply engineering (General)TC401-506ENWater Supply, Vol 21, Iss 2, Pp 886-898 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bromide disinfection byproducts iopamidol monochloramine source water total organic halogen Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506
spellingShingle	bromide disinfection byproducts iopamidol monochloramine source water total organic halogen Water supply for domestic and industrial purposes TD201-500 River, lake, and water-supply engineering (General) TC401-506 Nana Osei B. Ackerson Hannah K. Liberatore Susan D. Richardson Michael J. Plewa Thomas A. Ternes Stephen E. Duirk Chloramination of iopamidol- and bromide-spiked waters containing natural organic matter
description	Iopamidol (an iodinated X-ray contrast medium) and bromide are precursors in the formation of halogenated disinfection byproducts (DBPs). The interactions of these precursors are vital to elucidate the formation of halogenated DBPs during chloramination. This work investigated the formation of total organic halogen and select individual DBPs in two laboratory-chloraminated source waters containing iopamidol and bromide. Experiments were carried out in batch reactors containing Barberton source water (BSW) and Cleveland BSW (CSW), spiked with iopamidol (5 μM), bromide (15 μM), and 100 μM monochloramine. Total organic iodine concentrations were approximately equal regardless of source water since they are mostly unreacted iopamidol and iopamidol DBPs. Almost equal amounts of total organic chlorine (3–4 nM) were produced in the source waters, but higher quantities of total organic bromine were formed in BSW than CSW. Substantial quantities of regulated trihalomethanes (THMs) and haloacetic acids (HAAs) were formed in the source waters, along with appreciable concentrations of iodinated trihalomethanes (CHBrClI, CHCl2I, and CHBr2I). Low concentrations of iodo-HAAs were detected, especially at low pH. Overall, bromide concentrations appeared to suppress iodo-DBP formation during chloramination of iopamidol in the presence of natural organic matter. A good correlation (R2 = 0.801) between the yields of regulated DBPs and iodo-DBPs was observed. HIGHLIGHTS Bromide suppressed the formation of iodo-THMs without bromine atoms.; Approximately equal quantities of total organic chlorine were formed regardless of NOM characteristics.; Iodoacetic acids showed substantial formation at low pH irrespective of NOM.;
format	article
author	Nana Osei B. Ackerson Hannah K. Liberatore Susan D. Richardson Michael J. Plewa Thomas A. Ternes Stephen E. Duirk
author_facet	Nana Osei B. Ackerson Hannah K. Liberatore Susan D. Richardson Michael J. Plewa Thomas A. Ternes Stephen E. Duirk
author_sort	Nana Osei B. Ackerson
title	Chloramination of iopamidol- and bromide-spiked waters containing natural organic matter
title_short	Chloramination of iopamidol- and bromide-spiked waters containing natural organic matter
title_full	Chloramination of iopamidol- and bromide-spiked waters containing natural organic matter
title_fullStr	Chloramination of iopamidol- and bromide-spiked waters containing natural organic matter
title_full_unstemmed	Chloramination of iopamidol- and bromide-spiked waters containing natural organic matter
title_sort	chloramination of iopamidol- and bromide-spiked waters containing natural organic matter
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/56de9f9a265046b98e097cf6b79563a2
work_keys_str_mv	AT nanaoseibackerson chloraminationofiopamidolandbromidespikedwaterscontainingnaturalorganicmatter AT hannahkliberatore chloraminationofiopamidolandbromidespikedwaterscontainingnaturalorganicmatter AT susandrichardson chloraminationofiopamidolandbromidespikedwaterscontainingnaturalorganicmatter AT michaeljplewa chloraminationofiopamidolandbromidespikedwaterscontainingnaturalorganicmatter AT thomasaternes chloraminationofiopamidolandbromidespikedwaterscontainingnaturalorganicmatter AT stepheneduirk chloraminationofiopamidolandbromidespikedwaterscontainingnaturalorganicmatter
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Chloramination of iopamidol- and bromide-spiked waters containing natural organic matter

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