Changes in dissolved organic matter fluorescence and disinfection byproduct formation from UV and subsequent chlorination/chloramination

Lyon, Bonnie A., Cory, Rose M. and Weinberg, Howard S. (2014) Changes in dissolved organic matter fluorescence and disinfection byproduct formation from UV and subsequent chlorination/chloramination. Journal of Hazardous Materials, 264 411-419. doi:10.1016/j.jhazmat.2013.10.065


Author Lyon, Bonnie A.
Cory, Rose M.
Weinberg, Howard S.
Title Changes in dissolved organic matter fluorescence and disinfection byproduct formation from UV and subsequent chlorination/chloramination
Journal name Journal of Hazardous Materials   Check publisher's open access policy
ISSN 0304-3894
1873-3336
Publication date 2014-01-15
Year available 2013
Sub-type Article (original research)
DOI 10.1016/j.jhazmat.2013.10.065
Volume 264
Start page 411
End page 419
Total pages 9
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Subject 2307 Health, Toxicology and Mutagenesis
2310 Pollution
2311 Waste Management and Disposal
2304 Environmental Chemistry
2305 Environmental Engineering
Formatted abstract
Ultraviolet (UV) irradiation is being increasingly used to help drinking water utilities meet finished water quality regulations, but its influence on disinfection byproduct (DBP) precursors and DBP formation is not completely understood. This study investigated the effect of medium pressure (MP) UV combined with chlorination/chloramination on the fluorescent fraction of dissolved organic matter (DOM) isolated from a United States surface water with median total organic carbon content. Parallel factor analysis was used to understand how UV may alter the capacity of DOM to form DBPs of potential human health concern. The production of chloral hydrate and cyanogen chloride from MP UV followed by chlorine or chloramine, respectively, correlated with a decrease in fluorescence intensity of a protein/tryptophan-like component (R2=0.79-0.99) and a humic-like component (R2=0.91-1.00). This suggests that the UV-induced precursors to these compounds originated from DOM with similar characteristics to these components. The fluorescent DOM components identified in this study are similar to reoccurring components that have been previously identified in a range of raw and treated waters, and this work demonstrates the value of using fluorescence analysis of DOM to understand the relationships between DOM source and DBP formation under a range of treatment conditions.
Keyword Ultraviolet treatment
Fluorescence spectroscopy
Disinfection byproducts
Parallel factor analysis
Dissolved organic matter characterization
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
Advanced Water Management Centre Publications
 
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