Thermodynamics Research Center / ThermoML | Thermochimica Acta

ABSTRACT

In the present research, the equilibrium data of two ternary systems, carbon dioxide- toluene- naphtha-lene and carbon dioxide- ethanol- acridine are determined between 298.15 K and 318.15 K and pressureup to 8.9 MPa using a high pressure apparatus. In each experiment, the equilibrium solubilities of naph-thalene in toluene and acridine in ethanol decrease by increasing the pressure due to adding the carbondioxide as the anti-solvent to the liquid phases. Also, the obtained experimental data was correlated byPeng-Robinson and Soave-Redlich-Kwong equation of states along with Van der Waals and Huron Vidalmixing rules. The adjustable parameters of mentioned models are obtained using the experimental dataand reported along with average absolute relative deviation of each model. The results show that SRKequation of state with Huron- Vidal mixing rule has the minimum deviation from the experimental databetween the studied models for both ternary systems.