Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/52395
Type: Artigo de periódico
Title: Liquid-liquid equilibrium of pseudoternary systems containing glycerol plus ethanol plus ethylic biodiesel from crambe oil (Crambe abyssinica) at T/K = (298.2,318.2,338.2) and thermodynamic modeling
Author: Basso, RC
Meirelles, AJD
Batista, EAC
Abstract: In the present work liquid-liquid equilibrium (LLE) data were obtained for systems composed of glycerol + ethanol + distilled fatty acid ethyl esters from crambe oil at T/K = 298.2, 318.2 and 338.2. The experimental data measured for these systems were used to adjust the binary interaction parameters between their components for NRTL model treating the mixture of ester as a single ethyl ester, with the average molar mass of the mixture of esters. Two sets of UNIFAC binary interaction parameters were also tested to predict the LLE of the systems. Ethanol, which is distributed in the glycerol-rich and ester-rich phases, showed a greater affinity to the glycerol rich phase. Glycerol and FAEE presented very low miscibility. The average deviations related to mass fraction composition between experimental and calculated values by the NRTL model were less than 0.82% and by the UNIFAC model were between 2.27% and 3.97%, considering the two different sets of binary interaction parameters. (C) 2012 Elsevier B.V. All rights reserved.
Subject: Biodiesel
Crambe
Liquid-liquid equilibrium
NRTL model
UNIFAC model
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.fluid.2012.07.018
Date Issue: 2012
Appears in Collections:Unicamp - Artigos e Outros Documentos

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