Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - High-pressure phase behaviour of binary (CO2 + nicotine) and ternary (CO2 + nicotine plus solanesol) mixtures
AU - Ruiz-Rodriguez, Alejandro
AU - Najdanovic, Vesna
AU - Visak, Zoran P.
AU - Bronze, Maria do Rosario
AU - Antunes, Claudia
AU - da Ponte, Manuel Nunes
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. (C) 2009 Elsevier B.V. All rights reserved.
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. (C) 2009 Elsevier B.V. All rights reserved.
KW - Extraction
KW - Supercritical
KW - Vapour-liquid equilibria
KW - EQUILIBRIA
KW - CO2
KW - NEOTERIC SOLVENTS
KW - EXTRACTION
KW - NICOTINE
KW - CARBON-DIOXIDE
KW - Solanesol
KW - EQUATION
KW - MIXTURES
KW - Partition coefficients
KW - Nicotine
KW - TOBACCO-LEAVES
KW - IONIC LIQUIDS
KW - Tobacco
KW - TEMPERATURE
U2 - 10.1016/j.fluid.2009.04.008
DO - 10.1016/j.fluid.2009.04.008
M3 - Journal article
VL - 282
SP - 58
EP - 64
JO - Fluid Phase Equilibria
JF - Fluid Phase Equilibria
SN - 0378-3812
IS - 1
ER -