The present study suggests the use of L-arginine, as a potential organic compound for carbon dioxide capture, with an aqueous solution of triethanolamine (TEA) in a microreactor. The effect of arginine concentration (0-12 wt%), solvent flow rate, and inlet gas flow rate were evaluated on the mass transfer performance of CO2 absorption. The CO2 uptake capture (UP) and volumetric mass flux (NAaV) were recognized as the practical responses under the temperature of 45℃ and atmospheric pressure. It is noticed that increasing the amino acid concentration up to 12 wt%, improves up the UP value by 40%. The variations in solvent flow rates in the range of 3-9 ml/min, enhances the NAaV values from 192.2 to 242.4 (kmol/h.m3). A rising trend of NAaV values from 174.25 to 291.85 (kmol/h.m3) are also obtained by increasing the gas flow rates in the range of 120-300 ml/min. The CO2 absorption experiments confirmed that arginine can be introduced as an organic promoter in the aqueous blend of TEA-ARG for post-combustion CO2 capture processes on a micro scale.
