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US 2016/0256865 A1Published application
Hybrid ion exchange material and method for making the same
AssigneeGraver Technologies LLC
InventorsJames Knoll, Katie Henderson, Anatoly Bortun
Life of this patent
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Abstract
A high capacity hybrid ion exchange material with enhanced ability to selectively remove molecular (organics) and anionic (fluoride ion and oxyanions of phosphorus and arsenic) species from drinking water, industrial streams, and wastes, for applications predominantly in the medical and food industries.
Claims26
A hybrid ion exchange material comprising:
- an activated carbon carrier;
- mixed oxide including alumina;
- doping polyvalent metal oxide including titanium, zirconium, tin, cerium, lanthanum, iron, or manganese, or any combination thereof;
- and,
- wherein said mixed oxide or said doping polyvalent metal oxide or both are configured to selectively adsorb organic molecules, fluoride ion, or oxyanions of phosphorus and arsenic.
2 more elements
A method for preparing a hybrid ion-exchange material comprising:
- a. providing powder or granules of a porous active carbon support;
- b. spraying an aqueous solution of aluminum-containing mixed oxide precursor onto said granules or powder of porous active carbon support;
- c. drying impregnated support;
- d. contacting said granules or powder of impregnated active carbon support with a solution of abase reagent at a pH sufficient to neutralize acidic aluminum-containing mixed oxide precursor in said support pores with formation of nano-sized hydrous mixed oxide in the pores;
- e. washing said hybrid ion-exchange material with water to remove occluded electrolytes;
- and
- f. drying said hybrid ion-exchange material to an LOD approximately less than 10%.
4 more elements
Dependencies are inferred from the claim text.