As a new absorbent for carbon dioxide, sodium glycinate (SG) was investigated in this study. The solubilities of CO2 expressed as loading capacity (mol CO2/mol SG) in aqueous 10, 20, and 30 mass% sodium glycinate solutions were measured experimentally at 303.15, 313.15, and 323.15K over the partial pressure of carbon dioxide ranging from 0.1 to 200 kPa in an equilibrium cell. It was found that CO2 solubility increases with decrease in concentration of sodium glycinate solution and with decrease in temperature. It also increases with an increase in partial pressure of CO2 for the pressure range studied. The CO2 solubility in 10 mass% sodium glycinate solutions was found to be better than other aqueous absorbents such as MEA, AEPD, AMPD, and TIPA. The net amount of CO2 absorbed by 20 and 30 mass% sodium glycinate solution was almost same.
Compounds
#
Formula
Name
1
C2H4NNaO2
sodium glycinate
2
CO2
carbon dioxide
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.