Guardian: There are three main types of carbon capture and storage (CCS) technology that could eventually help reduce emissions from power stations and other industrial sites: pre-combustion, post-combustion and oxyfuel.
Post-combustion
In this method, CO2 is separated from the flue gas of the power station by bubbling the gas through an absorber column packed with liquid solvents (such as ammonia). In the most widely used system, once the chemicals in the absorber column become saturated, a stream of...