Composition for treating a fluid
First Claim
1. An aggregate composition for treating a fluid containing one or more contaminants, the composition comprising:
- an insoluble rare earth-containing compound comprising cerium oxide, wherein the insoluble rare earth-containing compound is adhered to a polymer binder, wherein the aggregate composition is in the form of one of a flowable particulate, granule, bead, pellet, powder, or fiber, and wherein the composition has;
i) less than about 15 wt% of the polymer binder; and
ii) at least about 75 wt% of the insoluble rare earth-containing compound.
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Accused Products
Abstract
An aggregate composition and process for making the aggregate composition. 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. A suitable insoluble cerium-containing compound can be derived from cerium carbonate or a cerium salt. In a specific embodiment, the aggregate composition consists essentially of one or more cerium oxides, the polymer binder and optionally a flow aid. A process for making the composition includes mixing the insoluble rare earth-containing compound with a polymer binder to form a mixture, and subjecting the mixture to mechanical, chemical and/or thermal treatment to adhere the rare earth compound to the polymer binder. The aggregate composition can be used in a variety of fluid treatment applications to remove one or more chemical and biological contaminants in a fluid.
548 Citations
50 Claims
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1. An aggregate composition for treating a fluid containing one or more contaminants, the composition comprising:
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an insoluble rare earth-containing compound comprising cerium oxide, wherein the insoluble rare earth-containing compound is adhered to a polymer binder, wherein the aggregate composition is in the form of one of a flowable particulate, granule, bead, pellet, powder, or fiber, and wherein the composition has; i) less than about 15 wt% of the polymer binder; and ii) at least about 75 wt% of the insoluble rare earth-containing compound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 38, 39, 45, 46)
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14. A composition for treating a fluid containing one or more contaminants, the composition comprises:
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an aggregate having more than 10.01 wt% of an insoluble rare earth-containing compound comprising cerium oxide derived by thermal decomposition; and a polymeric binder, wherein the insoluble rare earth-containing compound is adhered to the polymeric binder, and wherein the aggregate is in the form of one of a flowable particulate, granule, bead, pellet, powder or fiber. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 40, 41, 42, 47, 48)
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22. An aggregate composition for treating a fluid containing one or more contaminants, the aggregate composition comprising:
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a polymer binder comprising less than 15% by weight of the aggregate composition; one or more optional soluble rare earth-containing compounds; and an insoluble rare earth-containing compound. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 43, 44, 49, 50)
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Specification