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    Investigation of Ternary Phase Diagrams of (Water plus Butyric Acid plus Phenyl Acetate) at Different Temperatures
    (Amer Chemical Soc, 2016) Bayazit, Kayhan; Uslu, Hasan; Gok, Ash; Kirbaslar, S. Ismail; Santos, Dheiver; Bamufleh, Hisham S.
    The system {(water (1) + butyric acid (2) + phenyl acetate (3)} at different temperatures, such as 298.15 K, 308.15 K, 318.15 K, and at a constant pressure (101.3 +/- 0.5 kPa) in terms of liquid liquid phase equilibria were investigated. The solubility curves for each system were found. The consistency for the experiments to determine tie-lines was done by Othmer-Tobias method. NRTL and UNIQUAC equation correlated experimental data with good results. the consistency of UNIQUAC and NRTL for concerning ternary experimental data. The finest results were reached with UNIQUAC model (RMSD value is 0.087 for 298.15 K). Extraction ability of the solvents used in this study were assessed in term of distribution coefficients (D) (highest 5.20) and separation factors (s(f)) (highest 322).
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    Phase equilibria of (water plus butyric acid plus butyl acetate) ternary systems at different temperatures
    (Elsevier, 2014) Bayazit, Kayhan; Gok, Asli; Uslu, Hasan; Kirbaslar, S. Ismail
    Phase equilibrium (LLE) data of the solubility (binodal) curves and tie-line end compositions were examined for mixtures of {(water (1) + butyric acid + butyl acetate (2)1 at T=298.2 K, 308.2 K, and 318.2 K and 101.3 +/- 0.7 kPa. The relative mutual solubility of butyric acid is higher in the butyl acetate than water layers at the all temperatures used in this study. The consistency of the experimental tie-lines was determined through the Othmer-Tobias correlation equation. The LLE data were correlated with UNIQUAC and NRTL model, indicating the reliability of the NRTL and UNIQUAC equations for these ternary systems. The best results were achieved with the UNIQUAC equation for the correlations. Distribution coefficients and separation factors were measured to evaluate the extracting capability of the solvent. (c) 2014 Elsevier B.V. All rights reserved.