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

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• 作者：Sivamohan N. Reddy ; Giridhar Madras ; ^{giridhar@chemeng.iisc.ernet.in} ; ^{giridharmadras@gmail.com}
• 关键词：Solubilities ; Supercritical fluids ; Association model ; Activity coefficient model ; Wilson model ; Intermolecular interactions
• 刊名：Thermochimica Acta
• 出版年：2012
• 期刊代码：110_00406031
• 类别：ch
• 出版时间：10 August, 2012
• 卷：541
• 期：Complete
• 页码：49-56
• 文件大小：280 K

摘要

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 M茅ndez Santiago-Teja (MT) model and association model.