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Evaluation of Disinfection Byproduct Speciation Models Based on Biodegradation and Chemical Decomposition

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dc.contributor.authorMa, Xian
dc.contributor.departmentUniversity of Massachusetts Amherst
dc.date2023-09-24T06:23:45.000
dc.date.accessioned2024-04-26T08:48:27Z
dc.date.available2024-04-26T08:48:27Z
dc.date.issued2017-01-01
dc.description.abstractThe USEPA has regulated both chlorinated and brominated trihalomethanes (THMs) and haloacetic acids (HAAs) since Stage 2 D/DBP Rule. Among regulated species, all four chlorinated and brominated THMs are regulated as total TTHMs (TTHM). But of the nine HAAs, only the sum of five (HAA5) are regulated, with no detail on individual species. This leaves four unregulated HAAs of which all contain bromine. With more attention on the brominated haloacetic acids due to their higher toxicity, the focus on the formation of those unregulated brominated species is elevated. The objective of this study is to assess national occurrence of all brominated HAAs, together with the study of bromine incorporation which is used as an evaluation of relatively degree of bromination. In this research, both temperature and raw water bromine concentration are taken into consideration. Due to the fact that monitoring of bromodichloroacetic acid (BDCAA) is not widely done, bromochloroacetic acid (BCAA) was chosen to assess the HAA bromine incorporation. Statistical technologies were applied in the study to screen out unusable data. The result shows a strong relationship between seasons and disinfection byproduct (DBP) concentrations. Air temperature is also tested as a parameter of DBP formation. Selected HAA species biodegradation is also confirmed as an important role in DBP occurrence.
dc.identifier.urihttps://hdl.handle.net/20.500.14394/4758
dc.relation.urlhttps://scholarworks.umass.edu/cgi/viewcontent.cgi?article=1107&context=cee_ewre&unstamped=1
dc.source.statuspublished
dc.subjectDisinfection Byproduct Speciation Models
dc.subjectBiodegradation
dc.subjectChemical Decomposition
dc.subjectCivil and Environmental Engineering
dc.subjectEnvironmental Engineering
dc.titleEvaluation of Disinfection Byproduct Speciation Models Based on Biodegradation and Chemical Decomposition
dc.typearticle
dc.typearticle
digcom.contributor.authorMa, Xian
digcom.identifiercee_ewre/106
digcom.identifier.contextkey22249846
digcom.identifier.submissionpathcee_ewre/106
dspace.entity.typePublication
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