Physicochemical Properties of Aqueous Solutions of Sodium l-Prolinate as an Absorbent for CO₂ Removal

Abstract

The physicochemical properties such as density, viscosity, and refractive index of aqueous solutions of sodium l-prolinate (SP) as a solvent for CO2 capture was measured. These properties were measured at different temperatures from (298.15 to 343.15) K. The mass fractions of SP were 0.05, 0.10, 0.20, 0.30, and 0.40. The coefficient of thermal expansion was calculated from the experimental density values in the same temperature range. The analysis of experimental results shows that the densities, viscosities, and refractive indices of the aqueous solutions of SP increase with an increase in the mass fraction in the solution, and decrease with increasing temperature. The thermal expansion coefficient slightly increases with increasing temperature and concentration. The experimental data of density, viscosity, and refractive index were correlated by the least-squares method as a function of temperature. The predicted data were estimated from correlation coefficients for all measured properties and reported with standard deviations.

Natural deep eutectic solvents (NADES) based on citric acid and sucrose as a potential green technology: a comprehensive study of water inclusion and its effect on thermal, physical and rheological properties

“…where ρ (g mL −1 ) is the density, T (K) is the temperature, and a 0 (J mol −1 K −1 ) and a 1 (J mol −1 K −1 ) are the empirical constants. The estimated empirical constants are listed in Table along with root means square error (RMSE) calculated using Equation (Hayyan et al ., ; Shaikh et al ., ; Chemat et al ., ).…”

Investigation of thermophysical properties for aqueous blends of sarcosine with 1-(2-aminoethyl) piperazine and diethylenetriamine as solvents for CO2 absorption

“…A N U S C R I P T taurine) have been studied as potential new solvents [28,[30][31][32]. The salts of amino acids react with CO2 in a similar way as alkanolamines since both share similar functional group in their structures [28].…”

Experimental studies and artificial neural network modeling of surface tension of aqueous sodium l-prolinate solutions and piperazine blends

“…CO 2 capture process [12][13][14][15]. Among the studied amino acid salts, L-prolinate is the most promising to be used for CO 2 capture [15,16].…”

“…CO 2 capture process [12][13][14][15]. Among the studied amino acid salts, L-prolinate is the most promising to be used for CO 2 capture [15,16]. Therefore, for the commercial implementation, a comprehensive knowledge of the physical properties is very essential to design the gas absorption system.…”