Liquid-liquid equilibria for systems composed of rice bran oil and alcohol-rich solvents: Application to extraction and deacidification of oil

Autor(es)

Oliveira, Cassia M. ^[1] ; Garavazo, Bruna R. ^[1] ; Rodrigues, Christianne E. C. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, LES, Dept Food Engn ZEA FZEA, BR-13635900 Pirassununga, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Food Engineering; v. 110, n. 3, p. 418-427, JUN 2012.
• Citações Web of Science: 23

Resumo

The liquid-liquid equilibria of systems composed of rice bran oil, free fatty acids, ethanol and water were investigated at temperatures ranging from 10 to 60 degrees C. 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. The experimental data set was correlated by applying the UNIQUAC model. The average variance between the experimental and calculated compositions was 0.35%, indicating that the model can accurately predict behavior of the compounds at different temperatures and degrees of hydration. The adjustment of interaction parameters enables both the simulation of liquid-liquid extractors for deacidification of vegetable oil and the prediction of phase compositions for the oil and alcohol-rich phases that are generated during cooling of the stream exiting the extractor (when using ethanol as the solvent). (C) 2012 Elsevier Ltd. 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: 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: 07/05457-8 - Modelagem termodinamica do sistema oleo de farelo de arroz, acidos graxos livres, etanol e agua a diferentes temperaturas.
• Beneficiário: Bruna Rafaela Garavazo
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica