Liquid-liquid equilibria for systems composed of refined soybean oil, free fatty acids, ethanol, and water at different temperatures

Autor(es)

Chiyoda, Cristina ^[1] ; Peixoto, Elaine C. D. ^[2] ; Meirelles, Antonio J. A. ^[2] ; Rodrigues, Christianne E. C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, LES, Dept Food Engn ZEA FZEA, Pirassununga, SP - Brazil

^[2] Univ Estadual Campinas, EXTRAE, Dept Food Engn DEA FEA, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Fluid Phase Equilibria; v. 299, n. 1, p. 141-147, DEC 15 2010.
• Citações Web of Science: 19

Resumo

Soybean oil can be deacidified by liquid-liquid extraction with ethanol. In the present paper, the liquid-liquid equilibria of systems composed of refined soybean oil, commercial linoleic acid, ethanol and water were investigated at 298.2 K. The experimental data set obtained from the present study (at 298.2 K) and the results of Mohsen-Nia et al. {[}1] (at 303.2 K) and Rodrigues et al. {[}2] (at 323.2 K) were correlated by applying the non-random two liquid (NRTL) model. The results of the present study indicated that the mutual solubility of the compounds decreased with an increase in the water content of the solvent and a decrease in the temperature of the solution. Among variables, the water content of the solvent had the strongest effect on the solubility of the components. The maximum deviation and average variance between the experimental and calculated compositions were 1.60% and 0.89%, indicating that the model could accurately predict the behavior of the compounds at different temperatures and degrees of hydration. (C) 2010 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 06/00565-4 - Extração alcoólica de óleos vegetais: estudo do equilíbrio sólido líquido e da etapa de recuperação do solvente
• Beneficiário: Christianne Elisabete da Costa Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 08/07326-0 - Deterpenação de Óleos Essenciais de Bergamota e Limão: Determinação de Dados Experimentais e Modelagem do Equilíbrio Líquido-líquido
• Beneficiário: Cristina Chiyoda Koshima
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 09/17855-3 - Equilíbrio sólido-líquido, cinética de extração de componentes minoritários e projeto de extratores na extração de óleos vegetais com etanol
• Beneficiário: Christianne Elisabete da Costa Rodrigues
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 05/53095-2 - Equilíbrio de fases e processos de separação de misturas graxas e aquosas
• Beneficiário: Antonio José de Almeida Meirelles
• Modalidade de apoio: Auxílio à Pesquisa - Temático