Factors affecting the formation of trihalomethanes during Water chlorination: A bench-scaled study

Lee, Cheong Hong (2008) Factors affecting the formation of trihalomethanes during Water chlorination: A bench-scaled study. Universiti Malaysia Sabah. (Unpublished)


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This study aimed to evaluate the role of chlorine dose, temperature and contact time on the formation of THMs as a result of chlorination of swamp water. All samples were extracted using purge-and-trap (PAT) technique followed by determination of trihalomethanes by gas chromatography-electrolytic conductivity detectors (GC-ELCD). Pearson correlation was applied during data analysis. Concentration of trihalomethanes increased progressively as chlorine dose increased from 2 mg/L to 8 mg/L with strong relationship between them. The relationship between temperature and trihalomethanes was weak. The reaction rate of trihalomethanes formation increased as temperature increased from 4 °C to 35°C but showed a decreased at 25°C. Increase in contact time from 4 hours to 12 hours showed strong relationship with trihalomethanes except bromodichloromethane. This result indicated that presence of trihalomethanes in water was exclusively due to chlorination.

Item Type: Academic Exercise
Uncontrolled Keywords: chlorine dose, temperature, contact time, purge-and-trap, gas chromatography-electrolytic conductivity detector, temperature, trihalomethanes, chlorination
Subjects: Q Science > QD Chemistry
Divisions: SCHOOL > School of Science and Technology
Date Deposited: 27 Feb 2014 03:42
Last Modified: 12 Oct 2017 05:30
URI: http://eprints.ums.edu.my/id/eprint/8371

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