High pressure solid-liquid equilibrium of fatty acid ethyl esters binary systems

Autor(es)

Carareto, Natalia D. D. ^{[1, 2]} ; Costa, Mariana C. ^[3] ; Meirelles, Antonio J. A. ^[1] ; Pauly, J. ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Food Engn, Lab Extract Appl Thermodynam & Equilibrium, BR-13083862 Campinas, SP - Brazil

^[2] Lab Fluides Complexes & Leurs Reservoirs, UMR 5150, F-64013 Pau - France

^[3] Univ Estadual Campinas, Sch Appl Sci, BR-13484350 Limeira, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Fluid Phase Equilibria; v. 382, p. 158-163, NOV 25 2014.
• Citações Web of Science: 4

Resumo

The solid liquid phase diagrams of three binary mixtures of fatty acids ethyl esters (FAEEs), formed by ethyl laurate, ethyl myristate and ethyl palmitate, were measured using high pressure microscopy in the range of 0.1-80 MPa. In a first step, the melting temperatures of pure FAEEs have been determined showing a linear dependence from the pressure. The binary phase diagrams are only slightly affected by the pressure, even in very large pressure ranges such as those studied in this work. The modeling of the phase diagrams was attempted using a predictive approach previously developed by one of the authors in the case for n-alkane mixtures. The model was able to provide an accurate description of the high pressure solid liquid equilibrium of FAEE mixtures. Average absolute deviations between experimental and predicted liquidus curve varied from 0.7 to 2.8 K in the entire interval of pressures. (C) 2014 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 08/09502-0 - Estudo detalhado do equilíbrio sólido-líquido de misturas de álcoois graxos com ácidos graxos
• Beneficiário: Mariana Conceição da Costa
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 12/05027-1 - Equilíbrio sólido-líquido de compostos graxos e ponto de fulgor de biodiesel
• Beneficiário: Mariana Conceição da Costa
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Jovens Pesquisadores
• Processo FAPESP: 08/56258-8 - Phase equilibrium and purification processes in the production of biofuels and biocompounds
• Beneficiário: Antonio José de Almeida Meirelles
• Modalidade de apoio: Auxílio à Pesquisa - Programa BIOEN - Temático