Physical Properties of Aqueous Sodium Glycinate Solution as an Absorbent for Carbon Dioxide Removal

Abstract

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.

Characterization of potassium glycinate for carbon dioxide absorption purposes

“…Holst et al (2006) compared the apparent absorption rate constants of CO 2 with different amino acid salt solutions and concluded that they were comparable with alkanolamines. Recently Lee et al studied the physical properties and the absorption kinetics of sodium glycinate as an absorbent of carbon dioxide (Lee et al, 2005(Lee et al, , 2007Song et al, 2006). However, the data available in literature are still too limited to permit a suitable design and optimization of processes using amino acid absorbents.…”

Solubilities of carbon dioxide in aqueous solutions of sodium glycinate

“…This prompted us to study the aqueous SG solution as an absorbent for CO 2 . In our previous papers, we have reported the physical properties of SG solution and physical solubility and diffusivity of CO 2 in aqueous SG solution [21][22][23]. In continuation of this, we have measured the solubility of CO 2 in aqueous SG solutions of 10, 20, and 30 mass% at 303.15, 313.15, and 323.15 K over the pressure range (1-210 kPa) which would be utilized for the design, operation, and optimization of acid gas treatment equipment and also for measuring other chemical properties such as kinetic reaction, regeneration energy, and enthalpy of reaction [24][25][26][27][28][29][30][31][32].…”

Sorbents for the Capture of CO2 and Other Acid Gases: A Review

“…Both Tables and highlight the existence of trade-offs between different desirable features. No sorbent performs perfectly across all metrics, but many perform sufficiently well to result in low thermodynamic and economic costs of CO 2 avoided and successful implementation in practice. Finding acceptable trade-offs can be an effective way to identify promising sorbents.…”