Mathematical modeling of CO 2 absorption with ionic liquids in a membrane contactor, study of absorption kinetics and influence of temperature
Résumé
BACKGROUND: This work presents a comprehensive study of CO 2 capture from CO 2 /N 2 mixtures in a hollow fiber membrane contactor (HFMC). The absorbents considered were three different ionic liquids (ILs): 1-Ethyl-3-methylimidazolium acetate ([emim][OAc]), 1-ethyl-3-methylimidazolium ethylsulfate ([emim][EtSO 4 ]) and 1-ethyl-3-methylimidazolium methyl sulfate ([emim][MeSO 4 ]). A comprehensive 2-D mathematical model for the transport of CO 2 was developed and solved for steady-state and pseudo steady-state modes. For pseudo steady-state mode, the 2-D model was linked with a dynamic model applied on a tank from which IL was recirculated into the shell side of the HFMC.
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