Abstract: A process for the treatment of solutions or slurries containing dissolved metals comprises the steps of (a) contacting the solution or slurry with an ion exchange resin that selectively removes one or more dissolved metals from the solution or slurry wherein the solution or slurry and the resin are introduced into a vessel or column via sub-surface means, (b) separating loaded resin from the solution or slurry, (c) eluting the one or more metals from the loaded resin with an eluting agent, (d) separating the eluting solution containing eluted metal ions from the resin; and (e) transferring regenerated resin from step (d) back to step (a).