Purified hydrogen peroxide gas microbial control methods and devices
AssigneeLee Antimicrobial Solutions LLC
InventorJames D. Lee
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Abstract
The present invention relates to methods and devices for providing microbial control and/or disinfection/remediation of an environment. The methods generally comprise: generating a Purified Hydrogen Peroxide Gas (PHPG) that is substantially free of, e.g., hydration, ozone, plasma species, and/or organic species; and directing the gas comprising primarily PHPG into the environment such that the PHPG acts to provide microbial control and/or disinfection/remediation in the environment, preferably both on surfaces and in the air.
Claims20
A diffuser apparatus for producing non-hydrated purified hydrogen peroxide gas (PHPG) from humid ambient air comprising:
- (a) an air distribution mechanism providing an airflow of said humid ambient air;
- (b) a source of ultraviolet light;
- and
- (c) a metal, or metal oxide catalyst on a thin, air-permeable substrate structure having a surface,
- wherein said air flow is perpendicular to, and through, said surface and said humid ambient air has a residence time on said air-permeable substrate structure of less than a second,
- wherein said non-hydrated purified hydrogen peroxide gas comprises 0.015 ppm of ozone or less and is directed out of said diffuser apparatus and into an environment when said apparatus is in operation.
A photocatalytic reactor for producing non-hydrated purified hydrogen peroxide gas (PHPG) from humid ambient air comprising:
- (a) a housing;
- (b) an air distribution mechanism providing an airflow of said humid ambient air;
- (c) an intake filter;
- (d) a source of ultraviolet light;
- and
- (e) a metal, or metal oxide catalyst on a thin, air-permeable substrate structure having a surface,
- wherein said surface of said thin, air-permeable substrate structure is perpendicular to the direction of an air flow through said thin, air-permeable substrate structure;
- and
- wherein said humid ambient air has a residence time on said metal, or metal oxide catalyst of less than a second, and said non-hydrated purified hydrogen peroxide gas comprises 0.015 ppm or less ozone and is directed out of said photocatalytic reactor and into an environment when said photocatalytic reactor is in operation.
Dependencies are inferred from the claim text.