Thermodynamic Modeling For The Ternary Mixture CO2-Naphtalene-Phenanthrene At High Pressure

AbstractThe present work is concerned with the modelling of the solubility of solid compounds like Phenanthrene (PH), and Naphtalene (NA), as well as their mixtures, in supercritical fluids such as carbon dioxide.For the first two binary systems i.e. PH-CO2, the model combines the cubic Soave equation of state (EOS) and Redlich Kwong EOS and Peng Robinson EOS with the mixing rule (MR) of van der Waals (VDW) at constant temperature of 308.2K and a pressure range of 87.5-308.2 Bars.The obtained solubility of NA in supercritical carbon dioxide has been found to be higher than that of PH. This can be explained by the differences in the intermolecular interactions which are relatively weak for the case of NA. However, the model PR-VDW provides a better correlation than the others models for the solubility of Naphthalene and phenanthrene in supercritical CO2