Mathematical modeling and cascade design of hollow fiber membrane contactor for CO2 absorption by monoethanolamine

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

“…Because the more CO 2 molecules diffused via membrane pores when the concentration was increased. Similar results can be seen under different CO 2 concentrations (Boributh et al, 2011(Boributh et al, , 2012Lu et al, 2007).…”

Preparation, characterization and laboratory-scale application of modified hydrophobic aluminum oxide hollow fiber membrane for CO2 capture using H2O as low-cost absorbent

“…In this respect, it is well known that evaluation of mass transfer coefficients is of most importance since they determine the rate [40]. However, the Wilson-plot method has several advantages [40][41] in systems operating in steady-state conditions and when the only variable is the fluid velocity, but it has also some limitations [10,21,42]. In fact, we can remember here that during the practical operation the Wilson method cannot completely reflect the change of liquid pressure along the length of the membrane fiber due to pressure drop or the effects of membrane wetting, as well reported in the literature [43].…”

“…As previously stated, the Wilson plot method can be used to determine the membrane mass transfer resistance when the only variable of a steady-state process is the water velocity [10,13,21,30,[40][41][42]44]. So that, for a hydrophobic hollow fiber membrane with gas filled pores it was assumed that only the liquid and membrane mass transfer resistances contributed to the overall mass transfer process (K 0 ) between the gas-liquid interfaces.…”

Investigation of the effects of operating parameters on the local mass transfer coefficient and membrane wetting in a membrane gas absorption process

“…The Wilson plot method requires a variation of the liquid velocity to obtain a value of the membrane mass transfer resistance. However, in real life situations, the change of liquid velocity also affects the mass transfer resistance of the wetted membrane phase as well as the degree of membrane wetting as reported in several works in the literature [11,12].Therefore this method cannot truly reflect the effect of operating parameters on the membrane wetting. Another method is to develop a model for estimating the mass transfer coefficient or absorption flux, and using membrane wetting (wetting fraction) as a fitting parameter to match the simulation and experimental values.…”