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Korean Journal of Chemical Engineering

, Volume 30, Issue 6, pp 1289–1294 | Cite as

Phase equilibrium data for aqueous solutions of formic acid with 2-ethyl-1-hexanol at T=(298.2, 308.2, 318.2, and 328.2) K

  • Hossein Ghanadzadeh GilaniEmail author
  • Syrous Noury
  • Shain Asan
Separation Technology, Thermodynamics

Abstract

Liquid-liquid equilibrium (LLE) data for the system of (water+formic acid+2-ethyl-1-hexanol) were experimentally determined at T=(298.2, 308.2, 318.2, and 328.2) K and atmospheric pressure. A type-2 LLE was obtained for this ternary system. The influence of temperature on the equilibrium characteristics was found to be smallat the temperatures studied. Distribution coefficients and separation factors were calculated over the immiscibility regions. The experimental tie-line data were correlated using the UNIQUAC model. The values of the interaction parameters between each pair of the components were obtained for this thermodynamic model. The root mean square deviation (RMSD) between the observed and calculated mass fractions was 0.61%.

Key words

Liquid-liquid Equilibrium Tie-line Data Formic Acid 2-Ethyl-1-hexanol UNIQUAC Model Separation Factor Distribution Coefficient 

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Copyright information

© Korean Institute of Chemical Engineers, Seoul, Korea 2013

Authors and Affiliations

  • Hossein Ghanadzadeh Gilani
    • 1
    Email author
  • Syrous Noury
    • 2
  • Shain Asan
    • 2
  1. 1.Department of Chemical EngineeringUniversity of GuilanRashtIran
  2. 2.Department of Chemistry, Faculty of ScienceUniversity of UrmiaUrmiaIran

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