REMOVAL OF CARBON DIOXIDE FROM AIR

摘要

A process for removing CO2 from the air, comprising the steps of (a) passing the air in contact with a first ion exchange resin to absorb CO2 from the air; (b) passing a CO2 sorbent in contact with the first ion exchange resin to transport CO2 to the sorbent; passing the sorbent from step (b) in contact with a weak base anion exchange resin to absorb CO2 from the sorbent; separating the CO2 from the ion exchange resin by heating the ion exchange resin from step (c) whereby to drive off the CO2 from the resin. Alternatively, the ion exchange resin may be washed with water prior to heating.