A Comparison of Porous and Non-Porous Gas-Liquid Membrane Contactors for Gas Separation

Hollow fiber membrane contactor absorption of CO2 from the flue gas: Review and perspective

“…The porous membrane serves as a boundary between absorbent and gas, however, a non-porous membrane allows one species selectively transferred from one phase to another phase. In general, the CO 2 absorption performance of the porous membrane is better than that of the latter one (Al-saffar et al, 1997). Moreover, membranes also can be classified into symmetric membranes, asymmetric membranes and composite membranes in accordance with the characteristics of membrane structures.…”

Membrane gas–solvent contactor trials of CO2 absorption from syngas

“…The most common membrane materials are polypropylene (PP), polyethylene (PE) and polytetrafluoroethylene (PTFE) while water, amines such as monoethanolamine, amino acid salts and NaOH have all been tested as solvents [8][9][10][11][12][13][14][15][16][17][18][19]. Many of these studies have shown that the potential for membrane gas contactors is limited by the wetting of the membrane pores, which reduces the overall mass transfer coefficient [8,20,21].…”

A dense membrane contactor for intensified CO2 gas/liquid absorption in post-combustion capture

“…For instance, polydimethylsiloxane (PDMS) which shows the largest CO 2 permeability among rubbery polymers, can be considered as an interesting candidate. Nevertheless, calculations and experimental attempts, reported in a limited number of studies, lead to the conclusion that a self standing dense polymeric films (≈50-100 m) logically cannot provide a high enough mass transfer coefficient compared to microporous membranes [11][12][13].…”