Citation: Mohammad Reza Bozorgmehr, Mohammad Reza Housaindokht. Evaluation of attraction terms in equations of state on the prediction of solubility of some biomolecules in supercritical carbon dioxide[J]. Chinese Chemical Letters, ;2009, 20(4): 501-505. doi: 10.1016/j.cclet.2008.12.020 shu

Evaluation of attraction terms in equations of state on the prediction of solubility of some biomolecules in supercritical carbon dioxide

Mohammad Reza Bozorgmehr ^a ,
Mohammad Reza Housaindokht ^b

a Department of Chemistry, Faculty of Science, Islamic Azad University, Mashad Branch, Mashhad, Iran;
b Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashad, Iran Received 22 September 2008

Received Date: 22 September 2008

In the present work, effect of the attraction terms of four recently modified Peng-Robinson equations of state on the prediction of solubility of caffeine, cholesterol, uracil and erythromycin was studied. The attraction terms of two of these equations are linear relative to the acentric factor and for the other two are exponential. It is found that the later show less deviation. Also interaction parameters for the studied systems are obtained and the percentage of average absolute relative deviation (%AARD) in each calculation is displayed.
- Equation of state,
- Solubility,
- Supercritical carbon dioxide,
- Biomolecules
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