Process design for supercritical CO2 deterpenation of orange peel oil requires accurate knowledge of phase behavior. This work is focused on modeling high-pressure vapor-liquid equilibrium for the ternary system CO2-limonene-linalool, owing to do a preliminary thermodynamics analysis of this process based on calculated selectivity values. A modification of Peng-Robinson equation of state was adopted to regress binary interaction parameters from experimental VLE data and its capacity for temperature extrapolating calculations was investigated. A comparison of ternary VLE obtained from the respective binary systems and that calculated using additionally ternary informations was done.
CO2+limonene+linalool; vapor-liquid equilibrium; Peng-Robinson EOS; deterpenation; selectivity
