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Received June 20, 2005
Accepted September 20, 2005
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A new model for predicting solute solubility in supercritical fluids based on the Wilson equation
College of Chinese Pharmacy, Beijing University of Chinese Medicine and Pharmacy, Beijing, China 1College of Chemical Engineering, Beijing University of Chemical Technology, Beijing, China
liqs@mail.buct.edu.cn
Korean Journal of Chemical Engineering, January 2006, 23(1), 131-137(7), 10.1007/BF02705704
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Abstract
In this work, a new model based on the Wilson solution theory was proposed for predicting the solubility of solids in supercritical fluid (SCF) with and without cosolvent(s) of binary and ternary systems via computation of activity coefficients. For binary systems the model contains two adjustable parameters, while for ternary systems there are four adjustable parameters. The calculated results of the proposed model were compared with that of the literature models, and it is shown that the proposed model is a more accurate one.
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Chrastil J, J. Phys. Chem., 86, 3016 (1982)
Chun BS, Lee HG, Cheon JK, Wilkinson G, Korean J. Chem. Eng., 13(3), 234 (1996)
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Johnston KP, Eckert CA, Ind. Eng. Chem. Res., 28, 1115 (1989)
Kim YH, Lee YW, Park JK, Lee CH, Lim JS, Korean J. Chem. Eng., 19(6), 986 (2002)
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Zhu Z, Supercritical fluid technology-principals and applies, Chemical Engineering Press, Beijing, pp. 61-133 (2000)
Zigger DH, Eckert CA, Ind. Eng. Chem. Process Des. Dev., 22, 582 (1983)
