Plasticization and Swelling in Polymeric Membranes in CO₂ Removal from Natural Gas

Abstract

Removal of CO 2 from natural gas is necessary to purify the gas and to enhance its calorific value. Membrane technology is an efficient technique for CO 2 removal due to its ease of operation and low cost. Polymeric membranes exhibit excellent separation performance which is affected by plasticization and swelling in the membrane. Recent technological advancements and major problems in polymeric membranes are reported in this review. Separation performance of polymeric membranes is highlighted in terms of permeability and selectivity. Moreover, techniques to overcome the major problems in polymeric membranes are reviewed. Commonly, cross-linking and thermal treatment are used to minimize the effect of plasticization and swelling in the membrane. For future perspectives, there is a need to find more efficient methods to overcome these problems.

Experimental evaluation and theoretical prediction of CO2 & CH4 permeation in PSF/PDMS composite membrane under the influence of membrane swelling

“…[29] For this reason, Henry's law coefficients are more dominant in the PSF/PDMS composite membrane. The tetrahedral structure of CH 4 resulted in the slower permeation of CH 4 than CO 2 in the membranes, and as a result the parameters controlling permeation and diffusion through membrane pores have higher values for CO 2 as compared to CH 4 . The higher value of diffusivity in PSF is also justified by the high CO 2 permeance in the PSF membrane as compared to the PDMS/PSF in permeation analysis.…”

“…Polymeric membranes are one of the most prominent candidates for gas separation applications due to the wide variety of polymeric materials. [4][5][6][7] The composite membrane is one of the types of polymeric membranes that can overcome their shortcomings due to its excellent thermal and mechanical strength. [4] Polymeric membranes exhibit excellent gas separation performance in CO 2 /CH 4 separation, but the performance of polymeric membranes is effected by i) the tradeoff limit between permeability and selectivity in polymeric membrane, ii) plasticization at higher feed pressures, and iii) swelling due to water or solvent in the membrane.…”

Recent Membrane Developments for CO2 Separation and Capture

“…The membrane gas separation for CO 2 at industrial scale is still focused mainly on sweetening of natural gas and biogas upgrading [5,6]. For the post-combustion process, most applications of membranes are still in the research and development state.…”

Effect of Silica Nanoparticles on the Performance of Polysulfone Membranes for Olefin‐Paraffin Separation

“…Inorganic materials used for mixed‐matrix membranes are classified into porous and nonporous types . Silica , , palladium , TiO 2 , SnO 2 , and fullerene are some examples of nonporous particles, while zeolites , , carbon molecular sieves , carbon nanotubes , metal‐organic frameworks , , and mesoporous silica are examples of porous materials.…”