Journal of Industrial and Engineering Chemistry, Vol.42, 19-22, October, 2016
High-performance of modified Al2O3 hollow fiber membranes for CO2 absorption at room temperature
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To the best of our knowledge, we demonstrate for the first time that modified inorganic hollow
fiber membrane contactor can be successfully used for the absorption of CO2 from a gas mixture using aqueous solutions of monoethanolamine (MEA) at room temperature with extraordinary results. The fluoroalkylsilanized Al2O3 hollow fiber membrane contactors containing a high-symmetric distribution of morphological elements showed higher permeability for the CO2. A CO2 absorption flux of about 5.4 ×10-3 mol m-2 s-1 was achieved with a single symmetric ceramic membrane, which is considerably higher compared to other conventional polymeric membrane for CO2 absorption into MEA solutions.
Keywords:Membrane contactor;CO2 absorption;Inorganic membranes;Al2O3 hollow fiber membranes;Monoethanolamine (MEA)
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