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KMID : 1024520020110030241
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Journal of the Environmental Sciences
2002 Volume.11 No. 3 p.241 ~ p.246
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The Characteristics of Oxidation and Adsorption Processes for 2-Methylisoborneol(2-MIB) Removing
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Choi Keun-Joo
Kim Sang-Goo
Ryou Dong-Choon
Shin Pan-Se
Shon In-Shik
Oh Kwang-Joong
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Abstract
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One of the Musty and earthy smell compounds in raw water is generally attributed to 2-methylisoborneol (2-MIB). It is well known that activated carbon and oxidants such as , Cl , are effective ways to control 2-MIB. In isotherm equilibrium experiments, 2-MIB in distilled water was much more adsorbed to the activated carbon(A/C) than raw water containing dissolved organic carbon (DOC). The Freundlich constants(k) of distilled water and raw water were 3.36 and 0.049, and 1/n values were 0.80 and 0.42, respectively. The 2-MIB residual rate were Y = .55x/~ .54x/ with Ozone( ) dose by 5 minutes contact time at the 241 and 353 ng/L initial concentrations. The 2-MIB residual rate were Y = .32x/~ .35x/ with Chlorine dioxide(Cl ) dose by 15 minutes contact time at the 89 and 249 ng/L initial concentrations. 2-MIB was decreased from 1911 ng/L to 569ng/L by post-ozonation(70%removal efficiency) and removal efficiencies of 2-MIB by the following 4 kinds Granular Activated Carbon(GAC) process such as coal base, coconut base, wood base and zeolite＋carbon base were 95.8, 89.5, 88.4, and 93.7% respectively.ely.
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KEYWORD
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2-MIB, Freundlich Equation, Granular Activated Carbon, Oxidation by Ozone and Chlorine Dioxide
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