Method of destructing toxic chemicals
AssigneeHelsingin Yliopisto
InventorsUllastiina Hakala, Risto Hakala
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Abstract
There are disclosed processes for destructing a toxic chemical including the steps of mixing the toxic chemical with a liquid phase formed by an aqueous mixture of water and an ionic liquid or molten salt which is miscible with water, the ionic liquid or molten salt comprising a tertiary amine group or quaternary ammonium group; and contacting the toxic chemical in the liquid phase with the ionic liquid or molten salt so as to decompose the toxic chemical.
Claims29
A method of destructing a toxic chemical comprising the steps of:
- mixing said toxic chemical with a liquid phase formed by an aqueous mixture of water and an ionic liquid or molten salt which is miscible with water, said ionic liquid or molten salt comprising a compound according to formula I:
- wherein
- each of R1 to R3 is independently selected from the group of hydrogen and lower alkyl groups;
- and
- X− stands for an anion selected from the group of halogens, carbonates, bicarbonates, acetates, carbamates and combinations thereof;
- and
- contacting said toxic chemical in said liquid phase with said ionic liquid or molten salt so as to decompose said toxic chemical, and
- wherein the aqueous composition comprising water and the ionic liquid or molten salt has a pH of 6.5 or higher.
A composition suitable for use in a method of destructing a toxic chemical, the composition comprising a dry blend of chemical components, the dry blend of chemical components comprising:
- at least one compound according to formula I, wherein 2 or 3 of substituents R1 to R3 are hydrogen or methyl and X− stands for a halogen, carbonate, bicarbonate or acetate
- a substance selected from the group consisting of alcohols, polyols, and carbohydrates, the substance having a melting point higher than 15° C.;
- and
- optionally an oxidative agent having a melting point higher than 25° C.
An aqueous composition comprising an ionic liquid or molten salt selected from a compound according to formula I:
- wherein
- each R1 to R3 is independently selected from the group consisting of hydrogen and lower alkyl groups;
- and
- wherein X− stands for an anion selected from the group consisting of halogens, carbonates, bicarbonates, acetates, carbamates and combinations thereof,
- mixed with water to form a stable dispersion or solution, said dispersion or solution further comprising at least one oxidizing agent and optionally a donor of hydrogen bonds,
- wherein the aqueous composition comprising the ionic liquid or molten salt has a pH of 6.5 or higher.
Dependencies are inferred from the claim text.