| abstract |
The aggregate composition includes an insoluble rare earth-containing compound and a polymer binder. The insoluble rare earth-containing compound can include one or more of cerium, lanthanum, or praseodymium. Suitable insoluble cerium-containing compounds can be derived from cerium carbonate or cerium salts. In one particular embodiment, the agglomerated composition consists only of one or more cerium oxides, a polymer binder, and optionally a flow aid. The method of producing the composition comprises mixing an insoluble rare earth-containing compound with a polymer binder to form a mixture, and subjecting the mixture to mechanical, chemical, and / or heat treatment, and the rare earth compound is polymerized. Adhering to a binder. This agglomerated composition can be used in a variety of fluid treatment applications to remove one or more chemical and biological contaminants in the fluid. |