Prediction of Liquid-Liquid Equilibrium Data for a Quaternary System Containing an Electrolyte Resulting from the Dissociation of the Acetic Acid

  • A. NoumirEmail author
  • K. El-Hami
  • B. Saad
Conference paper
Part of the Advances in Intelligent Systems and Computing book series (AISC, volume 1104)


This work focuses on the prediction of liquid-liquid equilibrium data for the quaternary system composed of {water - acetic acid - cyclohexane - ethyl acetate} at 298.15 K from binary parameters. The dissociation of the acetic acid in the aqueous phase was taken into account in the thermodynamic modeling to study the influence of this consideration on the phase equilibrium data of {water - acetic acid - cyclohexane - ethyl acetate} quaternary system at 298.15 K. In our work, we have used the Extended UNIQUAC model to predict the LLE data of the studied quaternary system. The predicted results for both cases with and without considering the dissociation of the acetic acid in the aqueous phase were compared with the experimental data reported in the literature. The predicted liquid-liquid equilibrium data for {water - acetic acid - cyclohexane - ethyl acetate} quaternary system at 298.15 K were considerably influenced by including the dissociation of the acetic acid.



Electrolyte system Extended UNIQUAC model Liquid-liquid equilibrium Quaternary system Thermodynamic modeling 


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Authors and Affiliations

  1. 1.Polydisciplinary Faculty of Khouribga, Laboratory of Nanosciences and ModelingUniversity of Sultan Moulay SlimaneKhouribgaMorocco
  2. 2.National School of Applied Sciences of SafiUniversity of Cadi AyyadSafiMorocco

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