In this study, liquid-liquid extraction process in a Kuhni extraction column was modeled and simulated. A non-equilibrium dynamic model was developed for modeling liquid-liquid extraction processes based on a rate-based model. The model equations are inclusive of partial and ordinary differential equations which were discretized in column height direction. The population balance model was used ...

Vle have developed a predictive corresponding states model for the thermo· physical properties of pure refrigerants and refrigerant mixtures. The bulk phase properties such as the density, enthalpy and entropy are predicted using the prin· ciple of extended corresponding states. This theoretically based model uses shape factors to insure conformality among the various components and R134a is us...

PPR78 (Predictive-Peng-Robinson78) is a well-established cubic equation of state in which, the temperature-dependent binary interaction parameters (bips) between two molecules i and j [kij(T)] are predicted by group-contribution method. In such model, group-binary-interaction (G-bips), noted Akl Bkl, required per (k,l) pair groups. The purpose this article to demonstrate that inclusion enthalpy...

Computer-based virtual simulation is being widely used for the purposes of education and skills training. These include special needs education to sophisticate teaching aids in high schools and universities for the delivery of medical and scientific education. This project investigates the issues in the development of virtual learning environments (VLEs) in the teaching of biology to students i...

Background The volatility of a compound is its ability to change into a vapor, or to evaporate at a particular temperature and pressure. The normal boiling point of a liquid usually allows comparison of its volatility to other materials, with lower boiling points indicating greater volatility, but this may be affected somewhat by the presence of other materials. Comparison of the concentration ...