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Journal of Chemical and Petroleum Engineering
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Orouj, R., Abolghasemi, H., Vatani, Z., Mahdavian, M. (2011). New Method for Calculation Mixing Rule and Modification Semi-empirical Models for Solubility Modeling in Supercritical Solvent. Journal of Chemical and Petroleum Engineering, 44(1), 63-72. doi: 10.22059/jchpe.2011.22349
Reza Orouj; Hosein Abolghasemi; Zoha Vatani; Mohammad Mahdavian. "New Method for Calculation Mixing Rule and Modification Semi-empirical Models for Solubility Modeling in Supercritical Solvent". Journal of Chemical and Petroleum Engineering, 44, 1, 2011, 63-72. doi: 10.22059/jchpe.2011.22349
Orouj, R., Abolghasemi, H., Vatani, Z., Mahdavian, M. (2011). 'New Method for Calculation Mixing Rule and Modification Semi-empirical Models for Solubility Modeling in Supercritical Solvent', Journal of Chemical and Petroleum Engineering, 44(1), pp. 63-72. doi: 10.22059/jchpe.2011.22349
Orouj, R., Abolghasemi, H., Vatani, Z., Mahdavian, M. New Method for Calculation Mixing Rule and Modification Semi-empirical Models for Solubility Modeling in Supercritical Solvent. Journal of Chemical and Petroleum Engineering, 2011; 44(1): 63-72. doi: 10.22059/jchpe.2011.22349

New Method for Calculation Mixing Rule and Modification Semi-empirical Models for Solubility Modeling in Supercritical Solvent

Article 7, Volume 44, Issue 1 - Serial Number 422333, April 2011, Page 63-72  XML PDF (205.94 K)
DOI: 10.22059/jchpe.2011.22349
Authors
Reza Orouj1; Hosein Abolghasemi2; Zoha Vatani2; Mohammad Mahdavian2
1سازمان انرژی اتمی
2مهندسی شیمی
Abstract
The critical properties of a solute are required for modeling of the solubility by the equation of state. For many compounds, the critical properties are not available. So, group contribution method is utilized as a common method to estimate these properties. But, it leads to the consecutive errors in calculations of the solubility modeling. In this study, Soave-Redlish-Kowang (SRK) and Peng-Robinson equation of states with Huran-Vidal mixing rules were used for modeling of the solubility. A new method for evaluating of C2 (Huran-Vidal mixing rule parameter) is recommended as a function of temperature and pressure. For solubility modeling by semi-empirical correlation, the new forms of Chrastil and Mendez equations were used. Finally, the modeling of solubility for 20 compounds by these methods has been investigated. Results show that the AARD% for the models with semi-empirical equations (Charstil, Aguilera, Gordillo, Mendez, modified Charstil and modified Mendez) are 12.07, 11.71, 34.89, 19.89, 11.17 and 15.70 respectively; and for SRK, PR EOS are 14, 19.85 respectively.
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