The present paper deals with the evaluation of some widely used models used to calculate activity coefficients and the assumptions for the ideal solubility for some polycyclic aromatic hydrocarbons in benzene. The results show that, for ideal solubility, ΔCp? 0 is a better approximation than ΔCp? ΔSf. The values obtained for the entropic activity coefficients are similar from both UNIFAC and Flory-Huggins theories. The residual activity coefficients calculated from Scatchard-Hildebrand theory and UNIFAC are, however, very different. The combination of Flory-Huggins and Scatchard-Hildebrand theories gives better predictions for the solubility of polycyclic aromatic hydrocarbons in benzene than does UNIFAC theory.
ASJC Scopus subject areas
- Chemical Engineering(all)
- Industrial and Manufacturing Engineering