Measurement and thermodynamic modeling of ternary (liquid + liquid) equilibrium for extraction of o-cresol, m-cresol or p-cresol from aqueous solution with 2-pentanone. (January 2017)

• Record Type: Journal Article
• Authors: Chen, Yun; Lv, Ran; Li, Libo; Wang, Furong
• Is Part Of: Journal of chemical thermodynamics. Volume 104(2017)
• Page Start: 230
• Page End: 238
• Publication Date: 2017-01
• Subjects: Ternary (liquid + liquid) equilibrium -- Cresols -- 2-Pentanone -- NRTL -- UNIQUAC; Thermodynamics -- Periodicals; Thermochemistry -- Periodicals; Thermodynamique -- Périodiques; Thermochimie -- Périodiques; Thermochemistry; Thermodynamics; Periodicals; 541.369
• DOI: 10.1016/j.jct.2016.09.034
• Languages: English
• ISSNs: 0021-9614

Abstract

Highlights: A new extraction solvent for cresols, 2-pentanone, was investigated. (Liquid + liquid) equilibrium data for ternary {2-pentanone + cresols + water} systems were determined. NRTL and UNIQUAC models were used to correlate the experimental data. The influence of solute and temperature on the phase diagrams was discussed. The influence of temperature, solute concentration and solute type on the extractive properties of 2-pentanone was explored. Abstract: The (liquid + liquid) equilibrium (LLE) data are vital for the liquid extraction of cresols from aqueous solution with 2-pentanone as an extraction agent. Therefore, the ternary LLE data for {2-pentanone + o -cresol, m -cresol or p -cresol + water} were determined at T = (298.15 and 323.15) K and p = 101.3 kPa. And the reliability of the LLE data was ascertained by using the Othmer-Tobias and Hand equations. The distribution coefficients and separation factors were calculated to evaluate the effectiveness of extracting cresols from water. The thermodynamic NRTL and UNIQUAC models were used to correlate the experimental LLE data of the studied systems, and the binary interaction parameter values were obtained from the data correlation.