Alstom's chilled ammonia CO{sub 2} capture process advances toward commercialization

Carbon dioxide emissions aren't yet regulated by the EPA, but it is likely they will be soon. There are many technically feasible, but as-yet-undemonstrated ways to reduce the considerable carbon footprint of any coal-fired plant, whether it uses conventional or unconventional technology. One promising approach to removing CO{sub 2} from a plant's flue gas uses chilled ammonium bicarbonate to drive the separation process.