Thermodynamics Research Center / ThermoML | Fluid Phase Equilibria

CO2 solubility in water containing monosaccharides, and the prediction of pH using Peng-Robinson equation of state

Tsuji, T.[Tomoya], Shigeru, M.[Marina], Hoshina, T.-a.[Taka-aki], Yoneda, K.[Kenichi], Funazukuri, T.[Toshitaka], Morad, N. A.[Noor Azian]
Fluid Phase Equilib. 2017, 441, 9-16
ABSTRACT
Carbon dioxide (CO2) solubility was measured in aqueous solutions containing 0.6 wt% D(+)-galacturonic acid (GalH) or sodium D(+)-galacturonate (GalNa) by use of a recirculating apparatus at 313.4 K and at pressures up to 9.29 MPa. The solubilities of CO2 in the two solutions containing GalH or GalNa were similar to those in pure water. The experimental data were correlated with Peng-Robinson-Stryjek-Vera (PRSV) equation of state. A new method was developed to estimate pH by use of the molar volume from the PRSV equation and compared with measured pH values. It gives some idea of the quantitative agreement between the equation of states and the measured pH values over the same range of conditions.
Compounds
# Formula Name
1 CO2 carbon dioxide
2 H2O water
3 C6H9NaO7 sodium galacturonate
4 C6H10O7 D-galacturonic acid
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
  • Mole fraction - 1 ; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Mass fraction - 4; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • wet flow meter
  • 10
  • POMD
  • 1
  • 2
  • 3
  • Mole fraction - 1 ; Liquid
  • Pressure, kPa; Liquid
  • Solvent: Mass fraction - 3; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • wet flow meter
  • 9