New empirical expressions to correlate solubilities of solids in supercritical carbon dioxide

Garlapati, Chandrasekhar and Madras, Giridhar (2010) New empirical expressions to correlate solubilities of solids in supercritical carbon dioxide. In: Thermochimica Acta, 500 (1-2). pp. 123-127.

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Abstract

Supercritical processes are gaining importance in the last few years in the food, environmental and pharmaceutical product processing. The design of any supercritical process needs accurate experimental data on solubilities of solids in the supercritical fluids (SCFs). The empirical equations are quite successful in correlating the solubilities of solid compounds in SCF both in the presence and absence of cosolvents. In this work, existing solvate complex models are discussed and a new set of empirical equations is proposed. These equations correlate the solubilities of solids in supercritical carbon dioxide (both in the presence and absence of cosolvents) as a function of temperature, density of supercritical carbon dioxide and the mole fraction of cosolvent. The accuracy of the proposed models was evaluated by correlating 15 binary and 18 ternary systems. The proposed models provided the best overall correlations. (C) 2009 Elsevier BA/. All rights reserved.

Item Type:	Journal Article
Publication:	Thermochimica Acta
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Keywords:	Solubilities;Solvate complex;Supercritical fluids;Cosolvent; Empirical models
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	09 Jun 2010 07:35
Last Modified:	19 Sep 2010 05:59
URI:	http://eprints.iisc.ac.in/id/eprint/26990

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