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Received March 19, 2002
Accepted May 20, 2002
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Adsorption Equilibria Characteristics of Some Chlorinated Cleaning Solvent Vapors (CFC-113 and HCFC-141b)
RRC for Photonic Materials and Devices, Chonnam National University, Gwang-Ju 500-757, Korea 1Department of Environmental Engineering, Chonnam National University, Gwang-Ju 500-757, Korea 2Department of Chemical Engineering, Korea University, Seoul 136-701, Korea
Korean Journal of Chemical Engineering, March 2003, 20(2), 387-391(5), 10.1007/BF02697256
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Abstract
Chlorinated cleaning solvents have been widely used industrially, but some chlorinated cleaning solvents are considered to be prime contributors to stratospheric ozone depletion. The use of activated carbons to adsorb specific solvent vapors has thus received great attention. The adsorption equilibrium characteristics of HCFC-141b (1,1-dichloro-1-fluoroethane) and CFC-113 (1,1,2-trichloro-1,2,2-trifluoroethane) vapors on an activated carbon pellet were studied at various temperatures. Adsorption isotherms were measured and fitted by Sips equations. Detail parameters and their values for the design of adsorption facilities are suggested. The heats of adsorption for two solvents were estimated from experimental data.
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Cho SY, Lee YY, "Development of Equipment for CFC Recovery," KIST Project Report No. UCN769-4332-6; Korea, November (1991)
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Kim SJ, Cho SY, Kim TY, Korean J. Chem. Eng., 19(1), 61 (2002)
Kuo SL, Hines AL, J. Chem. Eng. Data, 37, 1 (1992)
Lewis WK, Gilliland ER, Chertow B, Cadogan WP, Ind. Eng. Chem., 42, 1319 (1950)
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Sips R, J. Chem. Phys., 16, 490 (1948)
Wolf K, J. Environ. Sci., 32, 41 (1989)
Wood GO, Carbon, 30, 593 (1992)
