Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Measuring and correlating solubility of hydrogen sulfide in aqueous solution of 2-((2 aminoethyl)amino)ethanol

Zoghi, Ali T., Momeni, Arash, Jalili, Amir Hossein, Shokouhi, Mohammad, Ahari, Jafar Sadeghzah
J. Chem. Thermodyn. 2018, 118, 198-205
ABSTRACT
The solubility of hydrogen sulfide (H2S) in aqueous solution of 2-((2-aminoethyl)amino)ethanol (AEEA) at low and medium pressures was determined for two different concentrations (i.e. 10 and 30 wt%). The experimental total pressure varied from (9.5 to 1594) kPa and the experimental temperature was set to (313.2, 328.2, 343.2 and 358.2) K. The experimental data are presented as the total pressure against acid gas loading (mole H2S per mole of AEEA). The Deshmukh-Mather model and Peng-Robinson equation of state were used for the liquid and vapour phase, respectively, to correlate the solubility of H2S in aqueous solutions of AEEA. The average absolute deviation percent (AAD%) in calculating the total pressure as a function of H2S loading obtained 5.0% for (AEEA H2O H2S) ternary system at the four values of temperature. The enthalpy change of the absorption of H2S in the 10 and 30 wt% aqueous solution of AEEA was also estimated with the tuned model.
Compounds
# Formula Name
1 H2S hydrogen sulfide
2 C4H12N2O N-(2-aminoethyl)ethanolamine
3 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
  • 2
  • 3
  • 1
  • Mole fraction - 1 ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Mass fraction - 2; Liquid
  • Liquid
  • Gas
  • Phase equilibration
  • 90
  • POMD
  • 2
  • 3
  • Vapor or sublimation pressure, kPa ; Liquid
  • Mass fraction - 2; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Closed cell (Static) method
  • 5