화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.35, No.6, 1328-1334, June, 2018
DOI10.1007/s11814-018-0036-6  Export Citation
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 Choi1, and Jong Sung Lim†
  • Department of Chemical and Biomolecular Engineering, Sogang University, Sinsu-dong, Mapo-gu, Seoul 04107, Korea
  • 1Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, MD 20742, U.S.A., USA
E-mail:
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-meansquare deviations (RMSD) being less than 1.38% and 1.49% from the UNIQUAC and NRTL models, respectively.
Keywords:2,3-Buthanediol;1-Pentanol;Liquid-liquid Equilibrium;NRTL;UNIQUAC
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