Process for the Capture of Carbon Dioxide
The invention provides a method for the capture of carbon dioxide gas which comprises contacting the carbon dioxide with at least one acid or a salt thereof, wherein said acid has a pKa value in the range of from 0 to 14, and said acid does not include an amino group. The at least one acid or a salt thereof may be in a solid or liquid form, but preferably comprises an aqueous solution. The acid may be inorganic or organic. Preferred acids have pKa values in the range from 4 to 13. Suitable organic acids may comprise aliphatic, carbocyclic or heterocyclic acids and mono- or poly-acids. Preferably, the acid is present as a salt. The method offers a convenient and simple 10 process which uses inexpensive consumables which are preferably largely biocompatible and renewable, and thereby offers significant advantages over the methods of the prior art.
RAYNER CHRISTOPHER MARK [GB]; RAYNEL GUILLAUME ROBERT JEAN-FRANCOIS [GB]; BALA SHASHI
Type of Offer:
« More Ecology Patents