Experimental measurements and modeling of CO2 solubility in sunflower, castor and rapeseed oils
authors Regueira, T; Carvalho, PJ; Oliveira, MB; Lugo, L; Coutinho, JAP; Fernandez, J
nationality International
journal JOURNAL OF SUPERCRITICAL FLUIDS
author keywords Carbon dioxide; Vegetable oil; Solubility; High pressure; SRK EoS
keywords SUPERCRITICAL CARBON-DIOXIDE; PRESSURE PHASE-EQUILIBRIA; VEGETABLE-OILS; SOYBEAN OIL; VISCOSITY MODIFICATION; BASE-STOCKS; FATTY-ACIDS; LUBRICANTS; MIXTURES; OXIDATION
abstract In this work solubility measurements of CO2 in three vegetable oils, a high oleic sunflower oil (HOSO), a castor oil and a rapeseed oil, for mole fractions ranging from 0.32 to 0.93 in the temperature range 298-363 K and up to 75 MPa were performed. Moreover, the densities and viscosities of these oils are reported from 278.15 to 373.15 K at atmospheric pressure. These data were used to evaluate the predictive ability of the fragment based approach. Solubility data were modeled by means of the SRK EoS and predicted employing the Carvalho and Coutinho correlation. Global average deviations inferior to 6% in CO2 mole fraction composition were achieved with the SRK EoS and maximum percentage absolute average deviations of 13% in pressure were obtained using the Carvalho and Coutinho correlation. (C) 2013 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 0896-8446
year published 2013
volume 82
beginning page 191
ending page 199
digital object identifier (doi) 10.1016/j.supflu.2013.07.010
web of science category Chemistry, Physical; Engineering, Chemical
subject category Chemistry; Engineering
unique article identifier WOS:000325830700024
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