| abstract |
Apparatus, process and article for treating an aqueous solution containing a chemical contaminant. The process includes contacting an aqueous solution containing a chemical contaminant with an aggregate composition comprising a compound containing insoluble rare earth to form an exhausted solution of chemical contaminants. The compound containing insoluble rare earth may include one or more cerium, lanthanum or praseodymium. A suitable insoluble cerium containing compound may be derived from cerium carbonate, cerium oxalate and / or a cerium salt. The aggregate composition may include more than 10.01% by weight of the insoluble rare earth-containing compound, and in a particular embodiment consists essentially of one or more cerium oxides, and optionally a binder and / or flow aid. Although proposed for a variety of fluid treatment applications, such applications specifically include the removal or detoxification of chemical contaminants in water. |