Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

Equilibrium solubility, density, viscosity and corrosion rate of carbon dioxide in potassium lysinate solution

Mazinani, S., Ramazani, R., Samsami, A., Jahanmiri, A., Bruggen, B. V., Darvishmanesh, S.
Fluid Phase Equilib. 2015, 396, 28-34
ABSTRACT
Aqueous solution of potassium lysinate has been characterized through CO2 solubility, density, viscosity and corrosion rate measurements in order to investigate the possible use of this amino acid for CO2 absorption. The equilibrium solubility of CO2 in 0.5, 1.5 and 2.5 mol/dm-3 (M) potassium lysinate solutions were measured experimentally with a stirred batch reactor at the CO2 partial pressure ranging from 0 to 45 kPa (low partial pressures) and temperatures between 298 and 313 K. The results of the gas solubility are presented as loading capacity (mole CO2/mole potassium lysinate) as function of CO2 partial pressure. Obtained data showed that loading capacity decreases with increase in concentration of potassium lysinate and temperature. The densities and viscosities of solutions were determined at the same conditions of the solubility measurement. Corrosion rate tests were also measured on carbon steel for the same solution concentrations but at 308 K. It was observed that viscosity and corrosion rate increase when the molar concentration of potassium lysinate increases.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 H2O water
3 C6H13KN2O2 potassium L-lysinate
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
  • 2
  • 3
  • Mole fraction - 1 ; Liquid
  • Amount concentration (molarity), mol/dm3 - 3; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa - 1; Gas
  • Liquid
  • Gas
  • Phase equilibration
  • 45
  • POMD
  • 2
  • 3
  • Mass density, kg/m3 ; Liquid
  • Temperature, K; Liquid
  • Amount concentration (molarity), mol/dm3 - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Pycnometric method
  • 9
  • POMD
  • 2
  • 3
  • Viscosity, Pa*s ; Liquid
  • Temperature, K; Liquid
  • Amount concentration (molarity), mol/dm3 - 3; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Capillary tube (Ostwald; Ubbelohde) method
  • 9