Removal of CO2 from various aggressive swelling feeds such as landfill gas with minimum pretreatment and high pressure natural gas for reinjection and supercritical processing streams for recycling are examples of membrane-based opportunities for improving sustainability.  Such cases, however, are among the most challenging types of systems in which membranes can be applied due to the aggressive swelling nature of high pressure CO2.  Favorable intrinsic diffusion and sorption selectivities of even high selectivity polyimide membrane materials used for less aggressive feeds such as O2/N2 and H2/N2 are reduced greatly by swelling in high pressure practical feeds containing CO2.  These additional challenges can be addressed while maintaining low costs in the final membrane module with proper proper engineering of the membrane material and the membrane formation process.  The importance of both productivity and selectivity will be considered using specific examples of advanced materials.

Membranes for aggressive CO<sub>2</sub> separation applications

239th National Meeting (2010)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.

Membranes for aggressive CO2 separation applications

Membranes for aggressive CO₂ separation applications