Liquid-liquid equilibrium during ethanolysis of soybean oil

Author(s)

Ferreira, Marcela Cravo ^[1] ; Bessa, Larissa C. B. A. ^[1] ; Meirelles, Antonio J. A. ^[1] ; Caldas Batista, Eduardo Augusto ^[1]

Affiliation

^[1] Univ Estadual Campinas, UNICAMP, Fac Food Engn FEA, EXTRAE, Dept Food Engn DEA, BR-13083970 Campinas, SP - Brazil

• Document type: Journal article
• Source: Fluid Phase Equilibria; v. 473, p. 286-293, OCT 15 2018.
• Web of Science Citations: 6

Abstract

This study obtained the liquid-liquid equilibrium (LLE) data for systems involved in the stepwise ethanolysis of soybean oil. Experiments were performed in a 1:9 M ratio (soybean oil:ethanol), at a reaction temperature of 303 K, in two different catalyst concentrations (0.02% and 0.5% of NaOH). Data on phase equilibrium allowed analyzing the presence of biphasic and monophasic regions during the ethanolysis and the phase distribution of partial acylglycerols and esters. Two different sets of UNIFAC binary interaction parameters were used to test their ability to predict the data obtained. As expected, the original parameters could not describe well this kind of system. Nevertheless, an alternative set of parameters obtained from the literature, adjusted to the liquid-liquid equilibrium data of systems in biodiesel production, was able to properly predict these LLE experimental data. (C) 2018 Elsevier B.V. All rights reserved. (AU)

• FAPESP's process: 14/21252-0 - Equilibrium and production processes of biofuels and bioproducts
• Grantee: Antonio José de Almeida Meirelles
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 16/10636-8 - From the cell factory to the Biodiesel-Bioethanol integrated biorefinery: a systems approach applied to complex problems in micro and macroscales
• Grantee: Roberto de Campos Giordano
• Support Opportunities: Program for Research on Bioenergy (BIOEN) - Thematic Grants