TY - JOUR
T1 - High-pressure phase behaviour of binary (CO2 + nicotine) and ternary (CO2 + nicotine + solanesol) mixtures
AU - Ruiz-Rodriguez, Alejandro
AU - Najdanovic-Visak, Vesna
AU - Visak, Zoran P.
AU - Bronze, Maria do Rosário
AU - Antunes, Cláudia
AU - Nunes da Ponte, Manuel
N1 - Bronze, Maria do Rosario
PY - 2009/8/15
Y1 - 2009/8/15
N2 - This work paper presents vapour-liquid equilibrium (VLE) data for binary (CO2 + nicotine) and ternary (CO2 + nicotine + solanesol) mixtures, at 313.2 K and 6, 8 and 15 MPa. The (CO2 + nicotine) system exhibits three phases (L1L2V) in equilibrium at 8.37 MPa. 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 15 MPa. At this pressure, partition coefficients and separation factors for solanesol/nicotine were calculated for different initial nicotine/solanesol compositions and a strong influence of composition was found. The results were 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.
AB - This work paper presents vapour-liquid equilibrium (VLE) data for binary (CO2 + nicotine) and ternary (CO2 + nicotine + solanesol) mixtures, at 313.2 K and 6, 8 and 15 MPa. The (CO2 + nicotine) system exhibits three phases (L1L2V) in equilibrium at 8.37 MPa. 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 15 MPa. At this pressure, partition coefficients and separation factors for solanesol/nicotine were calculated for different initial nicotine/solanesol compositions and a strong influence of composition was found. The results were 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.
KW - CO
KW - Extraction
KW - Nicotine
KW - Partition coefficients
KW - Solanesol
KW - Supercritical
KW - Tobacco
KW - Vapour-liquid equilibria
UR - http://www.scopus.com/inward/record.url?scp=67349129001&partnerID=8YFLogxK
U2 - 10.1016/j.fluid.2009.04.008
DO - 10.1016/j.fluid.2009.04.008
M3 - Article
SN - 0378-3812
VL - 282
SP - 58
EP - 64
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
IS - 1
ER -