Simulation of CO2 removal with aqueous sodium glycinate solutions in a pilot plant

Abstract

In this paper, density, viscosity, surface tension and vapor pressure of aqueous sodium glycinate solutions of different mass fractions (0.1-0.5) at different temperatures (20-100 o C) were simulated using Pro/II (version 6.01), a commercial process simulator, and compared with corresponding experimentally measured data. It was found that simulated data of physicochemical properties compared well with corresponding experimental data. We have also predicted concentration of CO 2 with each ideal stage in an absorber/stripper tower.

Kinetics and Steric Hindrance Effects of Carbon Dioxide Absorption into Aqueous Potassium Alaninate Solutions

“…Some amino acid salts such as potassium salts of taurine and glycine are effective for MGA due to high membrane breakthrough pressure and fast reaction kinetics for CO 2 . , Additionally, amino acid salt solutions are more inexpensive than alkanolamine solutions, and production costs can be reduced considerably if amino acid salt solutions are used in a MGA process rather than a MEA-based process . Extensive studies of the reaction between CO 2 and sodium glycinate (SG) amino acid salt, including reaction kinetics, thermodynamic properties measurements, and process simulation, were previously conducted by our group. − Kumar et al ,,− researched the aqueous potassium salt of taurine and reported its application to MGA, including important physical properties, CO 2 solubility, and reaction kinetics. Additionally, they suggested a correlation between the solubility of amino acid in pure water and the critical solution concentration for which a precipitate occurs during CO 2 absorption.…”

Density, Viscosity, Heat Capacity, Surface Tension, and Solubility of CO2 in Aqueous Solutions of Potassium Serinate

“…Thus, the higher the surface tension value of the absorbing liquid is, the lower the pore wettability. Lee et al [12][13][14][15] and Song et al 16,17 kinetics 14 and solubility 16 of CO 2 in an aqueous SG solution as well as the measurements of some physical properties of the aqueous SG solution. 12,13 Recently, the reaction enthalpies, CO 2 solubilities, and densities of aqueous SG solutions before and after CO 2 absorption have been reported by researchers.…”

“…Lee et al − and Song et al , have intensively studied the absorption of carbon dioxide into the aqueous sodium glycinate (SG) solution. They conducted investigations into the reaction kinetics and solubility of CO 2 in an aqueous SG solution as well as the measurements of some physical properties of the aqueous SG solution. , Recently, the reaction enthalpies, CO 2 solubilities, and densities of aqueous SG solutions before and after CO 2 absorption have been reported by researchers. , The CO 2 absorption characteristics of the aqueous potassium salts of glycine and taurine have been well-researched by Kumar et al ,− By the breakthrough pressure measurement of aqueous potassium taurate for a hydrophobic polyolefin membrane, it was revealed that the aqueous solution of potassium taurate could be an excellent CO 2 absorbing liquid which can carry out the membrane-gas absorption process in a stable condition .…”

Characterization of metal corrosion by aqueous amino acid salts for the capture of CO2

“…Although more expensive, amino acid salts have several advantages in terms of their physical and chemical properties. The advantages of amino acid salts include resistance to oxidative degradation, higher surface tension, greater reactivity and CO 2 absorption capacity, and low volatility due to their ionic nature [5][6][7].…”