Measurements and thermodynamic modeling of liquid-liquid equilibria in ternary system 2-methoxy-2-methylpropane+p-cresol+water

doi:10.1016/j.cjche.2015.10.011

Abstract

Abstract: Liquid-liquid equilibrium(LLE) data for the ternary system 2-methoxy-2-methylpropane(methyl tert-butyl ether)+p-cresol+water was measured at atmospheric pressure and temperatures of 298.15 K and 313.15 K. From the distribution coefficients and selectivity, it was found that 2-methoxy-2-methylpropane is an efficient solvent to extract p-cresol from wastewater.The consistency of the experimental tie-line data was verified with the Hand and Bachman equations.These data were also correlated with the non-random two liquid(NRTL) and universal quasi-chemical correlation activity coefficient(UNIQUAC) models to yield binary interaction parameters for p-cresol extraction process evaluation.Both models agreed with experiments very well, yet the NRTL model showed even smaller average deviation than the UNIQUAC model.

Key words: Liquid-liquid equilibria, Solvent extraction, Waste treatment, NRTL, UNIQUAC, Simulation

Liejin Luo, Dong Liu, Libo Li, Yun Chen. Measurements and thermodynamic modeling of liquid-liquid equilibria in ternary system 2-methoxy-2-methylpropane+p-cresol+water[J]. Chin.J.Chem.Eng., 2016, 24(3): 360-364.

Liejin Luo, Dong Liu, Libo Li, Yun Chen. [J]. Chinese Journal of Chemical Engineering, 2016, 24(3): 360-364.

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