Membrane processes for post-combustion carbon dioxide capture: A parametric study

Much of the research in the area of carbon dioxide recovery and storage focuses on minimizing the energy required for CO2 capture, as this step corresponds to the major cost contribution of the overall process (capture, transportation, injection). Out of the three traditional methods of CO2 capture (absorption, adsorption and membrane processes), absorption is considered to be the best available technology for post-combustion application. However, amine absorption requires 4–6 GJ/tonne of recovered CO2, in a large part due to significant energy consumption associated with the regeneration step.