Modeling CO2-facilitated transport across a diethanolamine liquid membrane

Analysis of CO2 separation and simulation of a partially wetted hollow fiber membrane contactor

“…It is indicated from the figure that by employing a very small wetting fraction, x = 0.4%, a very good agreement between model and experiment can be obtained for all range of gas flow rates. It should be noted that the effects of chemical reaction inside the wetted pores, which was ignored in previous investigations [22][23][24], has been considered in the simulation results shown in this figure. Fig.…”

“…They attributed this disagreement to the partial wetting and a good fit was searched by changing the wetting fraction in the model. Such disparity between theory and experimental results has also been observed when a chemical reaction occurs in the liquid phase [22][23][24]. In the recent case, the partial wetting has been assumed again, but the same procedure of Mahmud et al [17] was applied to search the wetting fraction, without consideration of chemical reaction in the liquid filled pores.…”

“…Therefore, the external mass transfer coefficient which results from Eqs. (24) and (25) is the representative of gas phase in shell and both gas filled and liquid filled membrane resistances.…”

“…In such a case, Eqs. (24) and (25) were employed instead of Eqs. (14)- (16) and (27), and the results are shown in Fig.…”

Poly (amide-6-b-ethylene oxide) multilayer composite membrane for carbon dioxide separation

“…However, they can fail due to the evaporation of the membrane solutions and 'wash-out' of the carriers (Bao and Michael, 2005;Matsuyama et al, 1999). Compared with supported liquid membranes and ion-exchange membranes, fixed carrier membranes show good durability as the carriers are connected onto the substrates (Zhao et al, 2006).…”