Zirconium hydroxide-based slurry for decontamination and detoxification
AssigneeThe United States of America as represented by the Secretary of the Army
InventorsJoseph P Myers, Lawrence R Procell, Felicia Levine
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Abstract
The present invention is directed towards a composition for decontaminating surfaces contaminated with toxic chemicals/substances, comprising at least one type of metal oxyhydroxide such as zirconium hydroxide, Zr(OH)4, optionally with added water for hydration of the solid, mixed into a carrier liquid used for application to a contaminated surface.
Claims15
A decontamination composition, comprising a carrier liquid and at least two types of Zr(OH)4 including a first type Zr(OH)4 and a second type Zr(OH)4, wherein said first type Zr(OH)4 has an average particle size of up to 100 nm and said second type Zr(OH)4 has an average particle size of at least 10 μm, wherein said decontamination composition has a weight ratio of said first type Zr(OH)4 to said second type Zr(OH)4 in the range of about 5:1 to 2:1, and wherein said carrier liquid comprises a mixture of sulfolane and water.
A decontamination composition, comprising:
- about 15 wt. % Zr(OH)4 having an average particle size of at least 10 μm;
- about 4 wt. % Zr(OH)4 having an average particle size of up to 100 nm;
- about 51 wt. % sulfolane;
- about 8.5 wt. % water;
- about 6 wt. % 1,3-Dibromo-5,5-dimethylhydantoin;
- about 0.5 wt. % metal oxide pigment;
- about 15 wt. % binder;
- and
- about 0.35 wt. % sepiolite day.
A process for decontaminating surfaces contaminated with at least one toxic agent, comprising applying onto said contaminated surfaces a decontamination composition comprising a carrier liquid and at least two types of Zr(OH)4 including a first type Zr(OH)4 and a second type Zr(OH)4, wherein said first type Zr(OH)4 has an average particle size of up to 100 nm and said second type Zr(OH)4 has an average particle size of at least 10 μm, wherein said decontamination composition has a weight ratio of said first type Zr(OH)4 to said second type Zr(OH)4 in the range of about 5:1 to 2:1, and wherein said carrier liquid comprises a mixture of sulfolane and water.
Dependencies are inferred from the claim text.