Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Liquid liquid equilibria for the MTBE+water + salts systems at 298.15K

Salabat, A.[Alireza]
Fluid Phase Equilib. 2007, 257, 1, 1-5
ABSTRACT
Methyl tertiary butyl ether (MTBE) is a widely used gasoline oxygenate. Contamination of MTBE and its major degradation product tertiary butyl alcohol (TBA) in groundwater and surface water has received great attention. However, removal of these contaminants from water is a problem. In this research, the liquid liquid equilibrium (LLE) data were measured for the systems MTBE+water + salts at 298.15 K. The salts used are CaCl2, MgCl2, NaCl, and KCl. In order to selecting a suitable salt for better separation, the partition coefficient and the selectivity factor of MTBE in these systems were calculated. A two-parameter equation was used for the correlation of the experimental tie-line data. Using this model the salting-out power of the salts was determined. Good agreement was obtained with the experimental tie-line data with this model.
Compounds
# Formula Name
1 C5H12O 2-methoxy-2-methylpropane
2 CaCl2 calcium chloride
3 Cl2Mg magnesium chloride
4 ClNa sodium chloride
5 ClK potassium chloride
6 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
  • 5
  • 6
  • Mass fraction - 1 ; Liquid mixture 2
  • Mass fraction - 6 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 1
  • Mass fraction - 6; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 6
  • POMD
  • 1
  • 4
  • 6
  • Mass fraction - 1 ; Liquid mixture 2
  • Mass fraction - 6 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 1
  • Mass fraction - 6; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 6
  • POMD
  • 1
  • 6
  • 2
  • Mass fraction - 1 ; Liquid mixture 2
  • Mass fraction - 6 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 1
  • Mass fraction - 6; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 6
  • POMD
  • 1
  • 6
  • 3
  • Mass fraction - 1 ; Liquid mixture 2
  • Mass fraction - 6 ; Liquid mixture 1
  • Mass fraction - 1 ; Liquid mixture 1
  • Mass fraction - 6; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 2
  • Liquid mixture 1
  • Chromatography
  • Chromatography
  • Chromatography
  • 6