Korean Journal of Chemical Engineering

, Volume 35, Issue 6, pp 1328–1334 | Cite as

Liquid-liquid equilibria for water+2,3-butanediol+1-pentanol ternary system at different temperatures of 298.2, 308.2, and 318.2 K

  • A. Young Jeong
  • Jeong Ah Cho
  • Yugyeom Kim
  • Hang-Kyu Cho
  • Kyu Yong Choi
  • Jong Sung Lim
Separation Technology, Thermodynamics


Liquid-liquid equilibrium (LLE) data was measured for the water+2,3-butanediol+1-pentanol ternary system at 298.2, 308.2, and 318.2 K under atmospheric pressure. Binodal solubility curves and complete ternary phase diagrams were experimentally obtained in mass fraction at these three different temperatures. The consistency of the tieline results was verified by using Othmer-Tobias and Hand plots. Distribution coefficients and separation factors of 2,3- butanediol were evaluated for each tie-line, and the effect of temperature was also investigated. It was found that the distribution coefficients and separation factors of 2,3-butanediol increased with temperature. The experimental LLE data were correlated by the UNIQUAC and NRTL models, and the binary interaction parameters calculated from these models have been reported. Both models successfully predict the experimental tie-line data within average root-mean-square deviations (RMSD) being less than 1.38% and 1.49% from the UNIQUAC and NRTL models, respectively.


2,3-Buthanediol 1-Pentanol Liquid-liquid Equilibrium NRTL UNIQUAC 


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Copyright information

© Korean Institute of Chemical Engineers, Seoul, Korea 2018

Authors and Affiliations

  • A. Young Jeong
    • 1
  • Jeong Ah Cho
    • 1
  • Yugyeom Kim
    • 1
  • Hang-Kyu Cho
    • 1
  • Kyu Yong Choi
    • 2
  • Jong Sung Lim
    • 1
  1. 1.Department of Chemical and Biomolecular EngineeringSogang UniversitySinsu-dong, Mapo-gu, SeoulKorea
  2. 2.Department of Chemical and Biomolecular EngineeringUniversity of MarylandCollege ParkUSA

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