Preparation of polyvinylidene fluoride hollow fiber membranes for CO2 absorption using phase-inversion promoter additives

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

“…[21], [22] and [5] where respectively the number of polymeric fibers was 100, 10 and 50 times higher compared to our case. [20] In addition, from Table 5, it is also clear that the value of CO 2 absorption flux in the present study is of the same order as those obtained from 35 polymeric membranes with a water flow rate of 1500 mL/mim [15].…”

“…In the past decades, the use of polymeric membrane such as ePTFE (expanded PTFE) [11,12], PVDF [13][14][15][16], PS [17], PEI [18], PP [19,20], PTFE [20], PFA [12], POF [21] for CO 2 separation from pure CO 2 [13][14][15][16][17][18][19][20]22] or a mixture of gases containing CO 2 [5,11,12,15,16,21,22] has been given considerable attentions by many researchers. Moreover, most of these polymers are not practical for applications because they are susceptible to chemical and thermal stresses, to change in morphology of membrane and of gas-liquid interface over short periods of time [19].…”

Effect of non-solvent additives on the structure and performance of PVDF hollow fiber membrane contactor for CO2 stripping

“…However, as illustrated in Table 3 it was found that viscosity of PVDF/LiCl solution reported in this study was higher than that of PVDF/PA solution. Since the viscosity of polymer solution play an important role in affecting the phase inversion process (solvent and non-solvent interaction), it can be anticipated that the system with strong non-solvent additive like LiCl would require less water to induce phase-inversion at the thermodynamic equilibrium as confirmed in the earlier study [11]. Therefore, it can be summarized that thermodynamic and kinetic effects of phase inversion process are two important parameters that can be controlled in order to enhance the membrane microstructure for any desired application [14].…”

“…The application of PVDF membrane in membrane contactor for CO 2 absorption or stripping has been reported by several researchers [9,10]. Mansourizadeh et al [11] applied PVDF hollow fiber membrane for CO 2 absorption by distilled water and it was proven that the membrane exhibited high performance of CO 2 absorption flux at ambient temperature. Similar membrane was tested for CO 2 stripping from water and moderate stripping flux was achieved due to the potential of water evaporation at elevated temperature [12].…”

Integration of Membrane Contactors and Bioelectrochemical Systems for CO2 Conversion to CH4

“…One of the materials that can be used for membrane manufacture is polypropylene (PP), reaching CO 2 transfer rates (from gas to liquid phase) of approximately 2 × 10 −4 -4 × 10 −4 mol m −2 s −1 in case of chemical absorption (alkanolamines) [31,32]. Other available membrane materials include silicone and polyvinylidene fluoride (characterized by larger pore sizes), for which CO 2 transfer rate can reach 1 × 10 −4 -5.4 × 10 −4 mol m −2 s −1 [33,34]. Alternatively, polytetrafluoroethylene (PTFE) membranes can be used, showing good resistance to water permeation from gas to liquid phase [35].…”