Characterization of dissolved organic matter for prediction of trihalomethane formation potential in surface and sub-surface waters

John Awad; John van Leeuwen; Christopher Chow; Mary Drikas; Ronald J Smernik; David J Chittleborough; Erick Bestland

doi:10.1016/j.jhazmat.2016.01.030

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Characterization of dissolved organic matter for prediction of trihalomethane formation potential in surface and sub-surface waters

Journal article

Peer reviewed

Characterization of dissolved organic matter for prediction of trihalomethane formation potential in surface and sub-surface waters

John Awad, John van Leeuwen, Christopher Chow, Mary Drikas, Ronald J Smernik, David J Chittleborough and Erick Bestland

Journal of Hazardous Materials, Vol.308, pp.430-439

2016

DOI: https://doi.org/10.1016/j.jhazmat.2016.01.030

PMID: 26874432

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https://doi.org/10.1016/j.jhazmat.2016.01.030View

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Abstract

Catchment runoff

DOM character

THMFP

Dissolved organic matter (DOM) in surface waters used for drinking purposes can vary markedly in character dependent on their sources within catchments. The character of DOM further influences the formation of disinfection by products when precursor DOM present in drinking water reacts with chlorine during disinfection. Here we report the development of models that describe the formation potential of trihalomethanes (THMFP) dependent on the character of DOM in waters from discrete catchments with specific land-use and soil textures. DOM was characterized based on UV absorbance at 254nm, apparent molecular weight and relative abundances of protein-like and humic-like compounds. DOM character and Br concentration (up to 0.5mg/L) were used as variables in models (R2>0.93) of THMFP, which ranged from 19 to 649μg/L. Chloroform concentration (12−594μg/L) and relative abundance (27−99%) were first modeled (R2>0.85) and from these, the abundances of bromodichloromethane and chlorodibromomethane estimated using power and exponential functions, respectively (R2>0.98). From these, the abundance of bromoform is calculated. The proposed model may be used in risk assessment of catchment factors on formation of trihalomethanes in drinking water, in context of treatment efficiency for removal of organic matter.

Details

Title: Characterization of dissolved organic matter for prediction of trihalomethane formation potential in surface and sub-surface waters
Authors: John Awad (Author) - University of South Australia
John van Leeuwen (Author) - University of South Australia
Christopher Chow (Author) - University of South Australia
Mary Drikas (Author) - University of South Australia
Ronald J Smernik (Author) - University of Adelaide
David J Chittleborough (Author) - University of Adelaide
Erick Bestland (Author) - Chinese Academy of Sciences
Publication details: Journal of Hazardous Materials, Vol.308, pp.430-439
Publisher: Elsevier BV
DOI: 10.1016/j.jhazmat.2016.01.030
ISSN: 1873-3336
PMID: 26874432
Organisation Unit: University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Sustainability Research Centre
Language: English
Record Identifier: 99612008602621
Output Type: Journal article

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