Modeling the Effectiveness of Hollow Fiber Membrane Contactors for CO₂ Capture Using Ionic Liquids: A Comparative Study

The ability of technology and active solvents to absorb carbon dioxide from natural gas and after-combustion gases and to regenerate used solvents is a key representative of the search for efficient methods and environmentally friendly solvents. This study aims to construct a 2D model to evaluate the effectiveness of a hollow fiber membrane contactor (HFMC), in capturing CO₂ using three distinct types of ionic liquids (ILs): 1-butyl-3-methylimidazoliumtriflate (bmim [Triflate]), 1-Ethyl-3-methylimidazolium ethyl sulfate (emim[EtSO₄]), and 1-Ethyl-3-methylimidazolium dicyanamide (emim[C₂N₂]). The present model considers the storage tank for the solvent and considers its availability over time. By comparing the model predictions with experimental data, the results were in good agreement, with a slight discrepancy in the starting time _©for₂₀₂₃ CO_2FIMTEC uptake due _{& MPRL.} to a time _All lag. _rights Among _reserved. the ILs evaluated, emim [C₂N₂] performs the best. Through sensitivity analysis, results reveal that increasing the feed flow rate and CO₂ partial pressure enhances both the CO₂ removal rate and prolongs solvent life.