TY - JOUR
T1 - Kinetics of trihalomethane formation from organic contaminants in raw water from the Bangkhen water treatment plant
AU - Panyapinyopol, Bunyarit
AU - Kanokkantapong, Vorapot
AU - Marhaba, Taha F.
AU - Wattanachira, Suraphong
AU - Pavasant, Prasert
N1 - Funding Information:
We are grateful to the National Research Center for Environmental and Hazardous Waste Management (NRC-EHWM), Chulalongkorn University and the Department of Sanitary Engineering, Faculty of Public Health, Mahidol University for their financial support.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2005
Y1 - 2005
N2 - The fractionation of raw water from Bangkhen water treatment plant, Bangkok, Thailand revealed that the mass distribution sequence of the six organic fractions from high to low was hydrophilic neutral (HPIN), hydrophobic acid (HPOA), hydrophilic acid, hydrophobic neutral, hydrophilic base, and hydrophobic base. The main organic matter components in raw water were HPIN and HPOA, which were also the two most important contributors of trihalomethane formation potential (THMFP). Linear dependencies between the level of each organic fraction and the formation potential of THM species were observed, which suggested the reactions between the organic fraction and chlorine during the chlorination were first order. The fractionation led to a deviation of bromide concentration in each organic fraction from the original concentration, and this affected the formation of brominated THM species. However, this effect was demonstrated to be within an acceptable range. The chlorination of an individual organic fraction resulted in a higher level of THMFP than that of the raw water and mixed fractions, indicating an inhibitory effect between the organic species.
AB - The fractionation of raw water from Bangkhen water treatment plant, Bangkok, Thailand revealed that the mass distribution sequence of the six organic fractions from high to low was hydrophilic neutral (HPIN), hydrophobic acid (HPOA), hydrophilic acid, hydrophobic neutral, hydrophilic base, and hydrophobic base. The main organic matter components in raw water were HPIN and HPOA, which were also the two most important contributors of trihalomethane formation potential (THMFP). Linear dependencies between the level of each organic fraction and the formation potential of THM species were observed, which suggested the reactions between the organic fraction and chlorine during the chlorination were first order. The fractionation led to a deviation of bromide concentration in each organic fraction from the original concentration, and this affected the formation of brominated THM species. However, this effect was demonstrated to be within an acceptable range. The chlorination of an individual organic fraction resulted in a higher level of THMFP than that of the raw water and mixed fractions, indicating an inhibitory effect between the organic species.
KW - Chlorination
KW - Disinfection by-products
KW - Hydrophilic
KW - Hydrophobic
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U2 - 10.1081/ESE-200060617
DO - 10.1081/ESE-200060617
M3 - Article
C2 - 15991722
AN - SCOPUS:20844461348
SN - 1093-4529
VL - 40
SP - 1543
EP - 1555
JO - Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
JF - Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
IS - 8
ER -