Journal
ENGINEERING JOURNAL-THAILAND
Volume 21, Issue 4, Pages 11-23Publisher
CHULALONGKORN UNIV, FAC ENGINEERING
DOI: 10.4186/ej.2017.21.4.11
Keywords
Adsorption; dissolved organic matter; leachate; powder activated carbon; trihalomethane formation potential
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Funding
- Research Administration Center, Office of the University, Chiang Mai University, Thailand [R000011326]
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This research investigated the reduction of dissolved organic matter (DOM) fractions and their trihalomethane formation potentials (THMFPs) by powder activated carbon (PAC) adsorption. Leachate contaminated groundwater around an inactive opendumping landfill was selected as the raw water. The PAC adsorption reaction was proven to be the pseudo second order kinetic reaction and the Freundlich isotherm. The dissolved organic carbon (DOC), dissolved organic nitrogen (DON), and THMFP removals were 55%, 57%, and 73%, respectively. The hydrophobic (HPO) fraction exhibited a higher THMFP compared to the hydrophilic (HPI) fraction. The results of DOM fractionation show that the use of PAC adsorption produced an efficient 87% reduction of the HPO fraction, which is characterized as having a high reactivity toward THMFP.
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