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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Solubility of oleic acid, triacylglycerol and their mixtures in supercritical carbon dioxide and thermodynamic modeling of phase equilibrium

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Author(s):
Garmus, Tabata T. [1] ; de Oliveira Giani, Natasha Aires [1] ; Filho, Walter A. Rammazzina [2] ; Queiroga, Carmen L. [3] ; Cabral, Fernando A. [1]
Total Authors: 5
Affiliation:
[1] Univ Campinas UNICAMP, Dept Food Engn, BR-13083862 Campinas, SP - Brazil
[2] Fed Technol Univ Parana, BR-86300000 Cornelio Procopio, PR - Brazil
[3] Univ Campinas UNICAMP, Chem Biol & Agr Pluridisciplinary Res Ctr CPQBA, BR-13083970 Campinas, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: JOURNAL OF SUPERCRITICAL FLUIDS; v. 143, p. 275-285, JAN 2019.
Web of Science Citations: 1
Abstract

To evaluate the selectivity of supercritical carbon dioxide (scCO(2)) as a solvent to deacidify vegetable oils, the solubility of oleic acid and of a mixture of oleic acid and refined sunflower oil in scCO(2) was measured. Sunflower oil was adopted as a pseudo-pure component and the phase equilibrium of ternary and binary systems were thermodynamically modeled by the Peng-Robinson equation of state with classical mixing rule. The values of the estimated and/or adopted critical properties in modeling thermodynamics were shown to be of great influence on the quality of data correlation. Although correlating data from binary systems is possible, the modeling was incapable of satisfactorily predicting the behavior of the phase equilibrium of the ternary system. The large deviations observed may derive from the presence of specific intermolecular interactions between the components of these systems that were not considered in this type of modeling. (AU)

FAPESP's process: 15/05340-0 - Thermodynamic modeling in sunflower oil desacidification with supercritical carbon dioxide
Grantee:Natasha Aires de Oliveira Giani
Support Opportunities: Scholarships in Brazil - Scientific Initiation
FAPESP's process: 15/09644-3 - Non-isothermal separation process using supercritical technology and thermal diffusion
Grantee:Fernando Antonio Cabral
Support Opportunities: Regular Research Grants