Publication: Characterization of precursors to trihalomethanes formation in Bangkok source water
Issued Date
2005-04-11
Resource Type
ISSN
03043894
Other identifier(s)
2-s2.0-16344388752
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Mahidol University
Rights Holder(s)
SCOPUS
Bibliographic Citation
Journal of Hazardous Materials. Vol.120, No.1-3 (2005), 229-236
Suggested Citation
Bunyarit Panyapinyopol, Taha F. Marhaba, Vorapot Kanokkantapong, Prasert Pavasant Characterization of precursors to trihalomethanes formation in Bangkok source water. Journal of Hazardous Materials. Vol.120, No.1-3 (2005), 229-236. doi:10.1016/j.jhazmat.2005.01.009 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/16519
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Title
Characterization of precursors to trihalomethanes formation in Bangkok source water
Abstract
Resin adsorption techniques using three types of resin (DAX-8, AG-MP-50, and WA-10) were employed to characterize the raw water (RW) from the major 3 million m3/day (793 million gal/day) drinking water treatment plant in Bangkok, Thailand. The dissolved organic carbon (DOC) mass distribution sequences of the six organic fractions in raw water, from high to low, were hydrophilic neutral (HPIN), hydrophobic acid (HPOA), hydrophilic acid (HPIA), hydrophobic neutral (HPON), hydrophilic base (HPIB), and hydrophobic base (HPOB). HPIN and HPOA were the two main precursors for trihalomethanes formation (THMFP) in this water source following chlorination. The chlorination of HPON and HPIN fractions only led to the formation of mostly chloroform, while other organic fractions formed both chloroform and bromodichloromethane. The linear dependency between each organic fraction concentration and THMFP indicated that the reactions of each organic fraction with chlorine were first-order. © 2005 Elsevier B.V. All rights reserved.