(Liquid + Liquid) Equilibrium for Ternary System of (Water + Phenol + Cyclohexane) at T = 298.2 K

(Liquid + Liquid) Equilibrium for Ternary System of (Water + Phenol + Cyclohexane) at T = 298.2 K

Hossein Ghanadzadeh (University of Guilan, Rasht, Iran), Milad Sangashekan (University of Guilan, Rasht, Iran) and Shahin Asan (University of Urmia, Urmia, Iran)
DOI: 10.4018/ijcce.2013070105
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Abstract

Experimental solubility curves and tie-line data for the (water + phenol + 2-ethyl-1-hexanol) system was obtained at T = 298.2 K and atmospheric pressure. The tie-line data was determined by techniques karl-fischer and refractometry. This ternary system exhibits type-2 behavior of LLE. Distribution coefficients and separation factors were measured to evaluate the extracting ability of the solvent. The consistency of the experimental tie-line data was determined through the Othmer–Tobias and Bachman equations. The data were correlated with the NRTL (a = 0.25) and UNIQUAC models and the parameters estimated present root mean square deviations below 0.50%.
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Experimental

Material

The phenol and 2-ethyl-1-hexanol with stated mass fraction purities higher than 0.99 were purchased from Chem-lab and Merck, respectively. The organic chemicals were dried over molecular sieves. Distilled and deionised water was used throughout all experiments. All materials were used as received without any further purification. Some measured physical properties for the chemicals used in this study along with the literature values are listed in (Table 1).

Table 1.
The refractive index (n) and density (ρ) of the pure components at T = 298.2 K
nρ(Kg.m-3)
Exp.Lit.Exp.Lit
cyclohexane1.42341.4235 (Mora′vkova′ et al., 2007)773.86773.89 (Mora′vkova′ et al., 2007)
Water1.33251.3325 (Ghanadzadeh Gilani et al.,2011)997.06997.04 (Ghanadzadeh Gilani et al.,2011)

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