(Vapor + liquid) equilibrium for the binary systems {water + glycerol} and {ethanol + glycerol, ethyl stearate, and ethyl palmitate} at low pressures |
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| Authors: | Renata Coelho Priscilla G dos Santos Marcos R Mafra Lucio Cardozo-Filho Marcos L Corazza |
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| Institution: | aDepartment of Chemical Engineering, Federal University of Paraná, CEP 81531-990, Curitiba, PR, Brazil;bDepartment of Chemical Engineering, Maringá State University (UEM), Av. Colombo 5790, 87020-900 Maringá, PR, Brazil |
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| Abstract: | This work reports the experimental measurements {(vapor + liquid) equilibrium} for the systems {water(1) + glycerol(2)}, {ethanol(1) + glycerol(2)}, {ethanol(1) + ethyl stearate(2)}, and {ethanol(1) + ethyl palmitate(2)}. Boiling temperatures were measured using an Othmer-type ebulliometer over a pressure range of 14 kPa to 96 kPa. The experimental data were well correlated using the NRTL and UNIQUAC models. The performance of the UNIFAC-Dortmund model in relation to predicting the phase equilibrium of the systems was also studied. |
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| Keywords: | Biodiesel Fatty acid ethyl esters VLE Ethanol |
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