Thermodynamic analysis of supercritical carbon dioxide extraction of terpenes from cold-pressed orange oil

Extraction of terpene hydrocarbons was studied using a dynamic flow system. Phase equilibrium data are presented for temperatures from 40 to 70°C and pressures from 8.3 to 12.4 MPa. The data have been correlated with a simple model using vapor fugacity coefficients from the group contribution of state and unsymmetric convention activity coefficients