Thermophysical properties of biodiesel and related systems: (Liquid + liquid) equilibrium data for soybean biodiesel |
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| Institution: | 1. Department of Chemical Engineering, UFSM, Santa Maria, RS 97105-900, Brazil;2. Department of Chemical Engineering, UEM, Maringá, PR 87020 900, Brazil;3. Department of Chemical Engineering, UFPR, Curitiba, PR 81531-990, Brazil;4. Department of Chemical and Food Engineering, UFSC, Florianópolis, SC 88040-900, Brazil;5. Department of Food Technology, IFRS – Campus Sertão, Sertão, RS 99170-000, Brazil;6. Department of Food Engineering, URI – Campus de Erechim, Erechim, RS 99700-000, Brazil;1. Max Planck Institute for Dynamics of Complex Technical Systems, Sandtorstraße 1, 39106 Magdeburg, Germany;2. Technische Hochschule Bingen, Berlinstr. 109, 55411 Bingen, Germany;1. Clermont Université, Université Blaise Pascal, Institut de Chimie de Clermont-Ferrand, UMR 6296 CNRS, équipe Thermodynamique et Interactions Moléculaires, ICCF-TIM, BP 80026, F-63171 Aubière, France;2. Departamento de Química, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Casilla, 653-SCL Santiago, Chile;3. Departamento de Física, Facultad de Ciencias, Universidad de Chile, Las Palmeras #3425, Ñuñoa, Casilla, 653-SCL Santiago, Chile;1. University of Coimbra, CIEPQPF, Department of Chemical Engineering, Polo II, Rua Silvio Lima, Coimbra 3030-970, Portugal;2. CECOAL-CONICET-UNNE, Ruta 5 Km 2.5, Corrientes 3400, Argentina;3. University of Coimbra, CEMMPRE, Department of Electrical and Computers Engineering, Polo II, Rua Sílvio Lima, Coimbra 3030-970, Portugal;4. University of Coimbra, Coimbra Chemistry Centre, Chemistry Department, Rua Larga, Coimbra 3004-535, Portugal |
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| Abstract: | This work reports (liquid + liquid) equilibrium (LLE) data for the systems of interest in soybean biodiesel production. Numerical data for LLE were obtained for binary, ternary and quaternary systems comprising fatty acid methyl esters (FAME) and fatty acid ethyl esters (FAEE) from soybean oil, water, glycerol, methanol, and ethanol at temperatures of (303.15, 318.15, and 333.15) K. Quantification of compounds in equilibrium in both phases was determined by analytical methods whereas solubility curves (binodal) were obtained by the cloud-point method. For all systems investigated, good alignments were obtained between phase compositions and the initial as well as overall compositions hence indicating low deviations from the mass balance. Experimental results were correlated using the UNIQUAC model with satisfactory agreement between experiment and theory. |
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