SCI和EI收录∣中国化工学会会刊

Chin.J.Chem.Eng. ›› 2016, Vol. 24 ›› Issue (3): 360-364.DOI: 10.1016/j.cjche.2015.10.011

• CHEMICAL ENGINEERING THERMODYNAMICS • Previous Articles     Next Articles

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

Liejin Luo, Dong Liu, Libo Li, Yun Chen   

  1. Key Laboratory of Heat Transfer Enhancement and Energy Conservation of Ministry of Education, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
  • Received:2014-12-16 Revised:2015-08-19 Online:2016-04-08 Published:2016-03-28
  • Supported by:

    Supported by the Project of the Science & Technology New Star of Pearl River in Guangzhou(2011J2200056), the Fundamental Research Funds for the Central Universities, SCUT(2014ZZ0057, 2015ZM046), and the National Natural Science Foundation of China(20906028, 21506066).

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