Liquid-liquid equilibrium data and thermodynamic modeling, at T/K=298.2, in the washing step of ethyl biodiesel production from crambe, fodder radish and macauba pulp oils

FUEL

卷:117

Article

Basso, Rodrigo Correa¹  Miyake, Fabio Hideki¹  de Almeida Meirelles, Antonio Jose¹  Caldas Batista, Eduardo Augusto¹ 

[1] Univ Campinas UNICAMP, Dept Food Engn, Sch Food Engn, Lab Extract Appl Thermodynam & Equilibrium ExTrAE, BR-13083862 Sao Paulo, Brazil

关键词: Biodiesel;    Liquid-liquid equilibrium;    Thermodynamic model;    Water washing;    Pseudo-ternary systems;   

DOI  :  10.1016/j.fuel.2013.09.020

来源: Elsevier

【 摘 要 】

In this work, pseudo-ternary liquid-liquid equilibrium data were obtained for three systems composed for water + ethanol + ethyl biodiesel from crambe, fodder radish and macauba pulp oils, at T/K = 298.2. Ethanol, which distributes in both phases, had greater affinity for the water-rich phase. Biodiesels and water showed almost complete immiscibility. Modeling with the NRTL and UNIQUAC thermodynamic models was performed, resulting in average deviations ranging from 0.49% to 1.29%. UNIFAC-LLE and UNIFAC-Dortmund were used in prediction of the liquid-liquid equilibrium of these systems, resulting in average deviations ranging from 1.91% to 2.27% for the systems containing biodiesel from crambe and fodder radish oils, and ranging from 3.17% to 3.28% for biodiesel from macauba oil. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

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