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Received March 9, 2006
Accepted July 18, 2006
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A comparison among three equations of state in predicting the solubility of some solids in supercritical carbon dioxide
Biophysical Chemistry Laboratory, Department of Chemistry, Faculty of Science, Ferdowsi University, Mashhad, Iran 1Thermophysical Properties Research Laboratory (TPRL), Department of Chemistry,Faculty of Science, Birjand University, Birjand, Iran 2Department of Chemistry, Faculty of Science, Islamic Azad University, Mashhad, Iran
Korean Journal of Chemical Engineering, January 2007, 24(1), 102-105(4), 10.1007/s11814-007-5017-0
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Abstract
Equations of state play an important role in chemical engineering designs, and they have assumed an expanding role in the study of the phase equilibria of fluids and fluid mixtures. In this report, a modified Peng-Robinson equation of state by Danesh et al., a modified Peng-Robinson equation of state by Gasem et al., and the Mansoori-Mohsen Nia-Modarress equation of state are used to predict the solubility of some solids in supercritical carbon dioxide. The systems studied were binary mixtures containing supercritical carbon dioxide with Ascorbic acid, Ascorbyl palmitate, Butyl hydroxyl anisole, Dodecyl gallate and Propyl gallate. Interaction parameters for the studied systems are obtained and the percentage of average absolute relative deviation (%AARD) in each calculation is displayed.
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