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Type: Artigo de periódico
Title: Chemical characterization and phase behaviour of grape seed oil in compressed carbon dioxide and ethanol as co-solvent
Author: Dalmolin, I
Mazutti, MA
Batista, EAC
Meireles, MAA
Oliveira, JV
Abstract: The aim of this work is to report phase equilibrium experimental results for the systems grape oil/carbon dioxide and (grape oil/carbon dioxide + ethanol). The oil was obtained by supercritical extraction from the grape seed residue from wine production. The static synthetic method using a variable-volume view cell was employed for obtaining the experimental bubble and dew (cloud) points transition data over the temperature range of (313.15 to 343.15) K and pressures up to 20.6 MPa. The experiments were carried out using (ethanol + CO(2)) overall mass fractions ranging from 0.50 to 0.99, keeping a fixed ethanol to carbon dioxide molar ratio at 1:3. Results indicate the existence of complex phase behaviour for all temperatures investigated with the occurrence of vapour-liquid, liquid-liquid and vapour-liquid-liquid phase transitions observed. (C) 2010 Elsevier Ltd. All rights reserved.
Subject: Phase equilibrium data
Grape seed oil
Carbon dioxide
Country: Inglaterra
Editor: Academic Press Ltd- Elsevier Science Ltd
Citation: Journal Of Chemical Thermodynamics. Academic Press Ltd- Elsevier Science Ltd, v. 42, n. 6, n. 797, n. 801, 2010.
Rights: fechado
Identifier DOI: 10.1016/j.jct.2010.02.003
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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