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Type: Artigo de periódico
Title: Lle Experimental Data, Thermodynamic Modeling And Sensitivity Analysis In The Ethyl Biodiesel From Macauba Pulp Oil Settling Step.
Author: Basso, Rodrigo Corrêa
da Silva, César Augusto Sodré
Sousa, Camila de Oliveira
Meirelles, Antonio José de Almeida
Batista, Eduardo Augusto Caldas
Abstract: The aim of this study was to obtain experimental data related to liquid–liquid equilibrium (LLE) of systems containing glycerol + ethanol + ethyl biodiesel from macauba pulp oil, perform thermodynamic modeling and simulate the settling step of this biodiesel using simulation software. Binary interaction parameters were adjusted for NRTL and UNIQUAC models. The UNIFAC-LLE and UNIFAC-Dortmund models were used to predict the LLE of the systems. A sensitivity analysis was applied to the settling step to describe the composition of the output streams as a function of ethanol in the feed stream. Ethanol had greater affinity for the glycerol-rich phase. The deviations between experimental data and calculated values were 0.44%, 1.07%, 3.52% and 2.82%, respectively, using the NRTL, UNIQUAC, UNIFAC-LLE and UNIFAC-Dortmund models. Excess ethanol in the feed stream causes losses of ethyl ester in the glycerol-rich stream and high concentration of glycerol in the ester-rich stream.
Subject: Biofuels
Computer Simulation
Models, Chemical
Plant Oils
Rights: fechado
Identifier DOI: 10.1016/j.biortech.2012.12.190
Date Issue: 2013
Appears in Collections:Unicamp - Artigos e Outros Documentos

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