Post-combustion carbon capture

CCS, Carbon Capture and Storage, is considered a promising technology to abate CO2 emissions from point sources. The present review deals with the principle of post-combustion capture techniques, including thermal or pressure swing principles, adsorption absorption, electrical membrane separation processes. Opportunities challenges are assessed. In first section absorption processes, several commercial technologies compared complemented by aqueous chilled ammonia (NH3) process, dual strong alkali absorption. second where fixed beds, circulating fluidized beds counter-current bed configurations will be discussed, particular focus on different adsorbents ranging zeolites activated carbon, more complex amine-functionalized adsorbents, nanotubes metal organic frameworks (MOFs), alkali-promoted oxides. Thirdly, processes analysed. finally summarize opportunities. Several research groups confirmed that most mature process: among assessment 57% apply 14% rely adsorption, 8% use membranes, 21% mineralization bio-fixation. This conclusion was in-line expectations since gas has been largely applied in various petrochemical industries. All other systems need further development prior large scale application.