Novel Applications for CO2 Capture

Due to the environmental focus on CO2 emissions around the world, there are numerous CO2 selective materials under development—several hundred polymers are reported (articles and patents). The main challenge for bringing these membranes into commercialization is to document durability over time (maintaining separation properties) during real operating conditions. 

Membranes do not tolerate particles, so the gas has to be filtered before separation. Then for several membrane materials water vapor may also be a problem, causing plugging (inorganic microporous materials) or swelling (polymeric materials). Hence for these applications, the gas must be dried. Depending on the specifications for the CO2, co-permeation of gases (especially remaining HC) may be a problem. What can then be recommended for removal of CO2 from flue gas Some alternatives are presented below  

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