Patent ID: 8173566
Filing Date: 2012-05-08
Classification: B01J

Abstract:
1. A method of regenerating a used activated carbon sorbent comprising: creating an activated carbon sorbent mixture containing used regenerated activated carbon sorbent and unused activated carbon sorbent; exposing the activated carbon sorbent mixture to a solution to remove contaminants collected on at least the used activated carbon sorbent to restore mercury sorption effectiveness to the used activated carbon sorbent, the solution including a salt containing an associated cation; dewatering the activated carbon sorbent mixture to remove used activated carbon sorbent and at least some contaminants from the solution forming used regenerated activated carbon sorbent and a liquid; drying the dewatered regenerated activated carbon sorbent from the used regenerated activated carbon sorbent mixture; treating at least some of the liquid to remove at least some compounds therefrom; and mixing at least some of the liquid with at least one of used regenerated activated carbon sorbent and unused activated carbon sorbent.