An association and Wilson activity coefficient model for solubilities of aromatic solid pollutants in supercritical carbon dioxide

Reddy, Sivamohan N and Madras, Giridhar (2012) An association and Wilson activity coefficient model for solubilities of aromatic solid pollutants in supercritical carbon dioxide. In: THERMOCHIMICA ACTA, 541 . pp. 49-56.

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Abstract

The solubilities of various solid pollutants in supercritical carbon dioxide were investigated. The intermolecular interactions play a significant role in determining the solubilities of solids in supercritical carbon dioxide. A new model equation was derived by using the concepts of association and activity coefficient model to correlate the solubilities of solids. The model equation combines the association and Wilson activity coefficient models and includes the interaction potentials between the molecules, which are useful in understanding the behavior of the solid solutes in SCCO2. The new model equation involves five adjustable parameters to correlate the solubilities of solids by incorporating the interactions between the molecules. The equation correlated 75 solid systems with an average AARD of around 9%, which was better than the correlations obtained from standard models such as Mendez Santiago-Teja (MT) model and association model. (C) 2012 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	THERMOCHIMICA ACTA
Publisher:	ELSEVIER SCIENCE BV
Additional Information:	Copyright for this article belongs to Elsevier
Keywords:	Solubilities; Supercritical fluids; Association model; Activity coefficient model; Wilson model; Intermolecular interactions
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	08 Aug 2012 08:41
Last Modified:	08 Aug 2012 08:41
URI:	http://eprints.iisc.ac.in/id/eprint/44909

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