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KMID : 1024519980070010104
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Journal of the Environmental Sciences
1998 Volume.7 No. 1 p.104 ~ p.111
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Molecular Weight Distribution Characterization of Organics for the Dongbok Lake Water by Coagulation and Adsorption of Activated Carbon
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Cheong Kyung-Hoon
Choi Hyoung-Il
Jung Oh-Jin
Son In-Gyu
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Abstract
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The Dongbok lake water before and after alum coagulation and activated carbon adsorption were analyzed in terms of organic contents, molecular weight distributuin (MWD), and UV-absorbance. Dissolved organic compounds in the Dongbok lake were fractionated into three molecular size classes by gel permeation chromatography. The fractionation was reasonably successful in isolating compounds with The bulk of the dissolved carbon was present in compounds of molecular weight in the range of 3,000~10,000. Alum coagulation preferentially treated molecules of high molecular weight, which has molecules larger than 10,000. The dissolved organic carbon (DOC) removal after activated carbon adsorption was high in the Fraction B , IR . The /DOC ratio after alum and activated carbon treatment the Fraction II, III. This results suggest that the organics remaining after each treatment has a trihalomethane formation potential
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KEYWORD
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gel permeation chromatography, molecular weight distribution alum coagulation, activated carbon adsorption
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