Phase equilibria of supercritical CO2 - fatty oil component binary systems

Bharath, Ragunath; Yamane, Seichiro; Inomata, Hiroshi; Adschiri, Tadafumi; Arai, Kunio

doi:10.1016/0378-3812(93)87021-r

Cited by 81 publications

(57 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The equilibrium curves for the system carbon dioxide-oleic acid (CO 2 -C18:1), presented in Figure 7, have the same behavior of the curves presented in the literature (Lockemann, 1994;Bharath et al, 1993). Figure 5: Equilibrium curve for the binary system CO 2 -C16, at 40, 60 and 80ºC Because of the different operational conditions studied for the binary systems, the better system to compare the experimental data is CO 2 -linoleic acid (C18:2), from the work of Chen et al (2000), presented in Figures 10 and 11, for the temperatures of 313.15K and 333.15K.…”

Section: Resultssupporting

confidence: 68%

Phase equilibria of oleic, palmitic, stearic, linoleic and linolenic acids in supercritical CO2

Penedo

Coelho

Mendes

2009

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

-The knowledge of the phase equilibrium is one of the most important factors to study the design of separation processes controlled by the equilibrium. Fatty acids are present in high concentration as byproducts in vegetable oils but the equilibrium data involving these components is scarce. The objective of this work is the experimental determination of the liquid-vapor equilibrium of five binary different systems formed by carbon dioxide and palmitic acid (C16:0), stearic acid (C18:0), oleic acid (C18:1), linoleic acid (C18:2) and linolenic acid (C18:3). The equilibrium experimental data was collected at 40, 60 and 80ºC at 60, 90 and 120 bar, at the extract and raffinate phases, using an experimental apparatus containing an extractor, a gas cylinder and pressure and temperature controllers. The data was modeled using the cubic equation of state of Peng-Robinson with the mixing rule of van der Waals with binary interaction parameters. The model was adequate to treat the experimental data at each temperature and at all the temperatures together. The best model that includes the van der Waals mixing rule with two parameters has maximum deviation of 17%. The distribution coefficients were also analyzed and it was concluded that the fractionation of the fatty acids is possible using supercritical carbon dioxide.

show abstract

Section: Resultssupporting

confidence: 68%

Phase equilibria of oleic, palmitic, stearic, linoleic and linolenic acids in supercritical CO2

Penedo

Coelho

Mendes

2009

Braz. J. Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Additionally, the phase equilibrium of the system (palmitic acid + CO 2 ) has been previously studied by Barath et al [14] and Bertakis et al [15]. However, to the best of our knowledge, the present study innovates by reporting phase equilibrium results of palmitic acid in high-pressure mixtures with carbon dioxide and ethanol as co-solvents.…”

Section: Introductionsupporting

confidence: 57%

Phase equilibrium measurements and modelling of ternary system (carbon dioxide+ethanol+palmitic acid)

Comim

Franceschi

Borges

et al. 2010

The Journal of Chemical Thermodynamics

View full text Add to dashboard Cite

“…Several studies report the phase behavior of systems involving triacylglycerols, fatty acids and carbon dioxide [11][12][13][14][15][16][17][18][19]. These studies showed that triacylglycerols and fatty acids are poorly soluble in CO 2 , due to its non-polarity.…”

Section: Introductionmentioning

confidence: 99%