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8716192 
Journal Article 
Prediction of Liquid-Liquid Equilibrium Data for a Quaternary System Containing an Electrolyte Resulting from the Dissociation of the Acetic Acid 
Noumir, A; El-Hami, K; Saad, B 
2020 
Springer Science and Business Media Deutschland GmbH 
1104 AISC 
536-544 
English 
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. Springer Nature Switzerland AG 2020. 
Electrolyte system; Extended UNIQUAC model; Liquid-liquid equilibrium; Quaternary system; Thermodynamic modeling 
Ezziyyani, M.