By proposing a predictive method with no adjustable parameter and by using infinite dilution activity coefficients of components in binary mixtures obtained from UNIFAC model, the binary interaction parameters (k12) in van der Waals mixing rule (vdWMR) and Orbey-Sandler mixing rule (OSMR) have been evaluated. The predicted binary interaction parameters are used in Peng-Robinson-S...

In food and chemical industry, supercritical fluid extraction is an environmental-friendly separation technique, which plays an important role in biomaterial processing. In this paper, a dynamic optimisation model for supercritical fluid extraction is proposed by combining a transformation based genetic algorithm and the Peng-Robinson equation of state. The proposed dynamic model for the relati...

La capacitŽ des Žquations d'Žtat (EoS) cubiques pour corrŽler et prŽdire les Žquilibres de phases en conditions hyperbares est analysŽe. Les donnŽes PVT de corps purs ainsi que les donnŽes d'Žquilibres liquide-vapeur (VLE) et volumŽtriques pour des mŽlanges binaires, jusqu'ˆ 2000 bar sont utilisŽes. Les rŽsultats des corrŽlations et des prŽdictions sont prŽsentŽs pour l'Žquation de Peng-Robinso...

Peng-Robinson equation of state is widely used with the classical van der Waals mixing rules to predict vapor liquid equilibria for systems containing hydrocarbons and related compounds. This model requires good values of the binary interaction parameter kij . In this work, we developed a semi-empirical correlation for kij partly based on the Huron-Vidal mixing rules. We obtained values for the...