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KMID : 0385520110240020094
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Analytical Science & Technology
2011 Volume.24 No. 2 p.94 ~ p.104
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Adsorption of MX (3-chloro-4 (dichloromethyl)-5-hydroxy-2-(5H)-furanone) on amphiphilic mesoporous silica in aqueous solution
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Yoo Eun-Ah
Chung Kang-Sup
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Abstract
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Mesoporous silica was synthesized in a water solvent and in an ethanol solvent with the non and cationic cetyltrimethyl ammonium chloride (CTAC) by varying the amount of the amphiphilic acrylic urethane oligomer (AAU) and the pH of the solution. The adsorption of the MX (3-chloro-4 (dichloromethyl)-5-hydroxy-2-(5H)-furanone) in drinking water was studied using the synthesized mesoporous silica as an adsorbent. The most appropriate silica was synthesized in acidic conditions in the water solvent and in alkali conditions in the ethanol solvent. The average pore sizes of the synthesized mesosilica were 3 ㎚ and more. The mesoporous silica synthesized by the addition of the AAU oligomer showed excellent adsorption characteristics. With respect to the co-surfactant, the best adsorption characteristics were obtained when the P64,a non-ionic surfactant with a high molecular weight, was used to synthesize the silica than when other co-surfactants were used. The adsorption rate decreased as the MX concentration in the water increased. Different adsorption equilibrium conditions were reached depending on the adsorbate MX concentration in the adsorbent and the solution. It was seen that perfect adsorption does not occur due to such equilibrium conditions.
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KEYWORD
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amphiphilic mesoporous silica, 3-chloro-4(dichloromethyl)-5-hydroxy-2-(5H)-furanone, mutasenic-Halogen
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