Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

L(+)-tartaric Acid Separations Using Aliquat 336 in n-Heptane, Kerosene, and 1-Octanol at 300 +- 1 K

Sharma, Hariom, Singh, Karnail, Wasewar, Kailas L., Athankar, Kanti Kumar
J. Chem. Eng. Data 2017, 62, 12, 4047-4063
ABSTRACT
In the present study, extraction equilibria experiments for water + L(+) tartaric acid + extractant/diluents were carried out at T=300+-1 K for concentrations of L(+) tartaric acid (0.1 to 1.0 mol.kg-1) and Aliquat 336 (0.22 to 0.88 mol.kg-1) in various diluents (n-heptane, kerosene, n-octanol). The equilibrium results were discussed in terms of the partition coefficient (P), dimerization coefficient (D), distribution coefficient (KD), extraction efficiency (E%), loading ratio (z), and overall equilibrium complexation constant (KE(1:1)). Kerosene+0.88 (mol.kg-1) Aliquat 336 was found favorable solvent with 50%extraction efficiency for the reactive extraction of L(+) tartaric acid. Whereas, 32.14% for nheptane+ 0.88 (mol.kg-1) Aliquat 336, and 22.22% for 1-octanol+0.88 (mol.kg-1) Aliquat 336. Only (1:1) complex was proposed for all the diluents with no overloading (z less than 0.5) in any case. Higher chemical extraction was observed in non-polar diluents: n-heptane and kerosene. Further, equilibrium results were fitted with relative basicity and mass action law model and it was found that the relative basicity model predicted the results better than mass action law for reactive extraction of L(+) tartaric acid.
Compounds
# Formula Name
1 C4H6O6 (2R,3R)-2,3-dihydroxybutanedioic acid
2 C7H16 heptane
3 C8H18O octan-1-ol
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
  • 4
  • 2
  • Molality, mol/kg - 1 ; Liquid mixture 1
  • Molality, mol/kg - 1; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • titration
  • 5
  • POMD
  • 1
  • 4
  • 3
  • Molality, mol/kg - 1 ; Liquid mixture 1
  • Molality, mol/kg - 1; Liquid mixture 2
  • Temperature, K; Liquid mixture 1
  • Pressure, kPa; Liquid mixture 1
  • Liquid mixture 1
  • Liquid mixture 2
  • titration
  • 5