Patent ID: 8317903

Claim:
A method of removing a contaminant from a gas using a reservoir having a base, comprising: contacting the gas with a solvent for the contaminant including passing the gas through the solvent to transfer the contaminant thereto and form a resultant solution; contacting the resultant solution with intercalated graphite onto which the contaminant is adsorbed, said contacting the resultant solution with intercalated graphite including providing the solvent in the reservoir with the intercalated graphite, and delivering the contaminated gas to the base of the reservoir such that the contaminated gas rises in the solvent and mobilises the intercalated graphite therein; withdrawing at least a portion of the solvent from an intermediate point in the reservoir, contacting the contaminated gas with the portion of the solvent prior to delivering the gas to the base of the reservoir; and recycling the solvent to the reservoir at a point downstream of the intermediate point.