Post-combustion, CO2 is removed from flue gas by passing it through a liquid amine which dissolves the CO2.

FORBES: Carbon Capture And Storage: Yea Or Nay?

There are essentially two methods to remove carbon from fuel: post-combustion and pre-combustion.

FORBES: Carbon Capture And Storage: Yea Or Nay?

Last week the Department of Energy announced the startup of the Post-Combustion Carbon Capture Center (PC4) in Gaston, Alabama.

FORBES: Still Chasing Clean Coal, US Opens Carbon Capture Lab

Because both of these approaches need totally new plant, they have received less attention than post-combustion capture technologies such as amines, which can be fitted onto the end of existing power stations.

BBC: Whatever happened to carbon capture?