Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Liquid-liquid equilibrium in the ternary systems triethylene glycol + salts + water at different temperatures; experiment and correlation

Salabat, A.[Alireza]
Fluid Phase Equilib. 2010, 288, 1-2, 63-66
ABSTRACT
Liquid-liquid phase equilibrium (LLE) was determined for the systems triethylene glycol (TEG) + potassium carbonate + water and TEG + potassium fluoride + water at 298.15, 308.15 and 318.15 K. The experimental data was correlated using Othmer- Tobias and Bancroft equations. In order to determine salting-out ability of the salts and selecting a suitable salt for better separation of TEG and water, the partition coefficient and selectivity factor of TEG were calculated.
Compounds
# Formula Name
1 C6H14O4 triethylene glycol
2 FK potassium fluoride
3 CK2O3 potassium carbonate
4 H2O water
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • 3
  • 4
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 3 ; Liquid mixture 2
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 3; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • spectrophotometric analysis
  • spectrophotometric analysis
  • spectrophotometric analysis
  • 21
  • POMD
  • 1
  • 4
  • 2
  • Mole fraction - 1 ; Liquid mixture 1
  • Mole fraction - 2 ; Liquid mixture 2
  • Mole fraction - 1 ; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Mole fraction - 2; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 2
  • Liquid mixture 1
  • Liquid mixture 2
  • spectrophotometric analysis
  • spectrophotometric analysis
  • spectrophotometric analysis
  • 15