Post-combustion: membranes polymeric (coal with CCUS)

At a coal-fired power plant with post-combustion capture using chemical absorption, the CO2 is separated from the combustion flue gas by membranes, which are polymeric films and act as a selective barrier able to separate CO2 from a stream. They can also act, in a non-selective way, as a contacting device between the gas stream and the liquid solvent (i.e. membrane absorption).