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The physical solubility and diffusivity of N 2 O and CO 2 in aqueous sodium glycinate (SG) solutions of various concentrations (1.0-3.5 kmol/m 3 ) and temperatures (303.15-323.15 K) were reported. The kinetics of the reaction between CO 2 and SG has been studied using absorption data measured by a wetted-wall column apparatus at various temperatures and concentrations. The second-order rate constant of CO 2 with SG was determined to be k 2 (m 3 kmol -1 s -1 ) ) 1.95 × 10 13 exp(-7670/T), where T is the absolute temperature (given in Kelvin). The activation energy for the reaction of CO 2 with SG was calculated to be 63.8 kJ/mol.

The physicochemical properties of aqueous sodium glycinate solution such as density, viscosity, surface tension, alkalinity, and pH were measured over a wide range of mass fraction (0.1 to 0.5) of sodium glycinate and at T ) (303.15 to 353.15) K. The measured data were correlated with standard equations, and parameters were reported along with average absolute deviations.

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