Formation of brominated disinfection byproducts from natural organic matter isolates and model compounds in a sulfate radical-based oxidation process

Handle URI:
http://hdl.handle.net/10754/563922
Title:
Formation of brominated disinfection byproducts from natural organic matter isolates and model compounds in a sulfate radical-based oxidation process
Authors:
Wang, Yuru; Le Roux, Julien ( 0000-0003-0245-8536 ) ; Zhang, Tao; Croue, Jean-Philippe
Abstract:
A sulfate radical-based advanced oxidation process (SR-AOP) has received increasing application interest for the removal of water/wastewater contaminants. However, limited knowledge is available on its side effects. This study investigated the side effects in terms of the production of total organic bromine (TOBr) and brominated disinfection byproducts (Br-DBPs) in the presence of bromide ion and organic matter in water. Sulfate radical was generated by heterogeneous catalytic activation of peroxymonosulfate. Isolated natural organic matter (NOM) fractions as well as low molecular weight (LMW) compounds were used as model organic matter. Considerable amounts of TOBr were produced by SR-AOP, where bromoform (TBM) and dibromoacetic acid (DBAA) were identified as dominant Br-DBPs. In general, SR-AOP favored the formation of DBAA, which is quite distinct from bromination with HOBr/OBr- (more TBM production). SR-AOP experimental results indicate that bromine incorporation is distributed among both hydrophobic and hydrophilic NOM fractions. Studies on model precursors reveal that LMW acids are reactive TBM precursors (citric acid > succinic acid > pyruvic acid > maleic acid). High DBAA formation from citric acid, aspartic acid, and asparagine was observed; meanwhile aspartic acid and asparagine were the major precursors of dibromoacetonitrile and dibromoacetamide, respectively.
KAUST Department:
Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division; Water Desalination & Reuse Research Cntr
Publisher:
American Chemical Society (ACS)
Journal:
Environmental Science & Technology
Issue Date:
16-Dec-2014
DOI:
10.1021/es503255j
Type:
Article
ISSN:
0013936X
Sponsors:
Research reported in this work was supported by the King Abdullah University of Science and Technology (KAUST) and the Fundamental Research Funds for the Central Universities (GK201402031).
Appears in Collections:
Articles; Water Desalination and Reuse Research Center (WDRC); Biological and Environmental Sciences and Engineering (BESE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorWang, Yuruen
dc.contributor.authorLe Roux, Julienen
dc.contributor.authorZhang, Taoen
dc.contributor.authorCroue, Jean-Philippeen
dc.date.accessioned2015-08-03T12:19:38Zen
dc.date.available2015-08-03T12:19:38Zen
dc.date.issued2014-12-16en
dc.identifier.issn0013936Xen
dc.identifier.doi10.1021/es503255jen
dc.identifier.urihttp://hdl.handle.net/10754/563922en
dc.description.abstractA sulfate radical-based advanced oxidation process (SR-AOP) has received increasing application interest for the removal of water/wastewater contaminants. However, limited knowledge is available on its side effects. This study investigated the side effects in terms of the production of total organic bromine (TOBr) and brominated disinfection byproducts (Br-DBPs) in the presence of bromide ion and organic matter in water. Sulfate radical was generated by heterogeneous catalytic activation of peroxymonosulfate. Isolated natural organic matter (NOM) fractions as well as low molecular weight (LMW) compounds were used as model organic matter. Considerable amounts of TOBr were produced by SR-AOP, where bromoform (TBM) and dibromoacetic acid (DBAA) were identified as dominant Br-DBPs. In general, SR-AOP favored the formation of DBAA, which is quite distinct from bromination with HOBr/OBr- (more TBM production). SR-AOP experimental results indicate that bromine incorporation is distributed among both hydrophobic and hydrophilic NOM fractions. Studies on model precursors reveal that LMW acids are reactive TBM precursors (citric acid > succinic acid > pyruvic acid > maleic acid). High DBAA formation from citric acid, aspartic acid, and asparagine was observed; meanwhile aspartic acid and asparagine were the major precursors of dibromoacetonitrile and dibromoacetamide, respectively.en
dc.description.sponsorshipResearch reported in this work was supported by the King Abdullah University of Science and Technology (KAUST) and the Fundamental Research Funds for the Central Universities (GK201402031).en
dc.publisherAmerican Chemical Society (ACS)en
dc.titleFormation of brominated disinfection byproducts from natural organic matter isolates and model compounds in a sulfate radical-based oxidation processen
dc.typeArticleen
dc.contributor.departmentWater Desalination and Reuse Research Center (WDRC)en
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Divisionen
dc.contributor.departmentWater Desalination & Reuse Research Cntren
dc.identifier.journalEnvironmental Science & Technologyen
dc.contributor.institutionShaanxi Normal Univ, Coll Tourism & Environm, Dept Environm Sci, Xian 710062, Shaanxi, Peoples R Chinaen
dc.contributor.institutionCurtin Univ, Curtin Water Qual Res Ctr, Perth, WA 6845, Australiaen
kaust.authorWang, Yuruen
kaust.authorLe Roux, Julienen
kaust.authorZhang, Taoen
kaust.authorCroue, Jean-Philippeen
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