Modeling of ternary solubilities of solids in supercritical carbon dioxide in the presence of cosolvents or cosolutes

Reddy, Sivamohan N and Madras, Giridhar (2012) Modeling of ternary solubilities of solids in supercritical carbon dioxide in the presence of cosolvents or cosolutes. In: Journal of Supercritical Fluids, The, 63 . pp. 105-114.

PDF Modeling.pdf - Published Version Restricted to Registered users only Download (263kB) | Request a copy

Abstract

The investigation of ternary solubilities of solids is essential for the efficient design of extraction processes. The ternary solubilities of solids for cosolvent and cosolute systems are complex functions of temperature, pressure and cosolvent/cosolute composition. The intermolecular interactions between the molecules have a significant role in the solubilities of mixed solids in SCCO2 and cosolvent ternary systems. Two model equations were developed for ternary SCCO2 + cosolvent/cosolute systems by using association and activity coefficient models. Both the model equations consist of five adjustable parameters and correlate the ternary solubilities of solids in terms of temperature, pressure, density and cosolvent/cosolute composition. The model equation for cosolvent systems correlated 43 solid pollutants-cosolvent-SCCO2, while the model equation for cosolute systems correlated 19 solute-cosolute-SCCO2 systems available in literature. The average AARD of the model equations are 4.73% and 4.87% for cosolvent ternary systems and mixed solids in SCCO2, respectively. (C) 2011 Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Publication:	Journal of Supercritical Fluids, The
Publisher:	Elsevier Science
Additional Information:	Copyright of this article belongs to Elsevier Science.
Department/Centre:	Division of Mechanical Sciences > Chemical Engineering
Date Deposited:	18 Apr 2012 05:13
Last Modified:	18 Apr 2012 05:13
URI:	http://eprints.iisc.ac.in/id/eprint/44304

Actions (login required)

View Item