Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

ABSTRACT

This work paper presents vapour liquid equilibrium (VLE) data for binary (CO2 + nicotine) and ternary (CO2 + nicotine + solanesol) mixtures, at 313.2K and 6, 8 and 15MPa. The (CO2 + nicotine) system exhibits three phases (L1L2V) in equilibrium at 8.37MPa. It is estimated that this system most likely follows the type-III phase behaviour. In the ternary system, the presence of solanesol in the vapour phase was detected only at the pressure of 15MPa. At this pressure, partition coefficients and separation factors for solanesol/nicotinewere calculated for different initial nicotine/solanesol compositions and a strong influence of compositionwas found. The resultswere modelled using the Peng Robinson equation of state (PR EOS) coupled with the Mathias Klotz Prausnitz (MKP) mixing rule (PR MKP model). Good correlations of the binary data, particularly in the case of the (CO2 + nicotine) mixture, were obtained. However, the model could not correlate the ternary data.