Solid Amine CO 2 Capture Sorbents

The capture of CO2 from gas streams has been achieved by the utilization of amineenriched, solid-sorbent systems. The initial solid sorbents were generated by the chemical treatment of carbonenriched fly ash concentrates with various amine compounds. It was determined that these amine-enriched fly ash carbon concentrates performed at a 18 % CO2 capture capacity based on commercially available sorbents. Alternative oxygen rich solids, such as, silica gel, activated carbon, and molecular sieves were examined as potential sorbents for the capture of CO2 from gas streams. The chemical sorption performance of these solid amine sorbents will be described within this paper.