Rigorous non-isothermal modeling approach for mass and energy transport during CO2 absorption into aqueous solution of amino acid ionic liquids in hollow fiber membrane contactors

In the current study, a rigorous modeling approach was used to develop mathematical model for non-isothermal absorption process of CO2 in hollow fiber membrane contactors (HFMC). Four amino acid-based ionic liquids (ILs) namely, tetramethylammonium glycinate [N1111][Gly], 1-ethyl-3-methylimidazolium [C2mim][Gly], 1-butyl-3-methylimidazolium [C4mim][Gly] and 1-hexyl-3-methylimidazolium [C?mim][Gly] were as absorbents. These ILs have never been implemented contactor operations both on lab scale industrial scale. Wide ranges operating conditions investigated freshly unloaded absorbents partial conversion considering steady-state model. Non-wetting adopted by keeping very low transmembrane pressure. The predicted significant temperature rise along length, ranging from 10 25 K, which further affected reaction kinetics. Simulations confirmed strong influence absorbent concentration mild separation performance ILs, boundary flux, kinetics between ILs. Very fast near interface justified dominancy chemisorption absorption. Finally, comparison with experimental data evidenced identical trends hence validated