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Physicochemical Characteristics of Waste Sea Shells for Acid Gas Cleaning Absorbent

Dept. of Environmental Engineering, Sorabol College, 165 Chung-hyo dong, Kyong-ju,Kyungbuk 780-711, Korea 1Dept. of Environmental Engineering, Hanseo University, Hae-mi myun, Seosan,Chung-nam 356-820, Korea 2Dept. of Environmental Engineering, Kawngwoon University, Wolke-Dong,Noweon Gu, Seoul 139-701, Korea 3Dept. of Environmental Engineering, Pusan National University, San 30,Changjeon-Dong, Kumjeong-Gu, Pusan 609-735, Korea
Korean Journal of Chemical Engineering, September 2000, 17(5), 585-592(8), 10.1007/BF02707171
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Abstract

The properties of waste shells, which cause pollution problems, are investigated in Southern beach, Korea. The absorbent surface area was affected by the contaminant gas removal efficiency of the waste shell absorbents, pore structures, absorbent deliquescence and hygroscopicity during the contaminant gas reaction. The BET surface area of calcination/hydration waste shell and limestone samples was increased by hydration in isothermal conditions. The absorption rate with acid gas is predicted by apparatus for measuring the hydration rate. The BET surface area of waste shell samples hydrated at 90 degrees C isothermal condition was greatly increased. And pore size distribution and diameter were increased after calcination/hydration reaction. Waste seashells can be regarded as a good absorbent for removing acid gases. Therefore, the recycling of waste seashells as a substitute for limestone would be profitable.

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