Methods and systems for removing hydrogen peroxide from a gas
AssigneeEntegris, Inc.
InventorsJürgen Michael Lobert, Joseph Wildgoose, Reena Srivastava, Edward John Washington
Life of this patent
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Abstract
Described are processes and equipment that are useful to remove hydrogen peroxide from a gas, for example from a hospital room as a step of sterilizing the room using hydrogen peroxide, or from a flow of exhaust air that is produced by sterilization equipment that uses hydrogen peroxide as a sterilizing agent.
Claims34
A method of processing a gas to remove hydrogen peroxide from the gas, the method comprising:
- providing gas that contains hydrogen peroxide,
- contacting the gas with carbon adsorbent that includes caustic agent and reducing agent, to reduce a concentration of the hydrogen peroxide in the gas.
A system for processing a gas that contains hydrogen peroxide to remove hydrogen peroxide from the gas, the system comprising:
- a housing that includes an inlet, an outlet, and an interior between the inlet and the outlet,
- at the interior, carbon adsorbent that comprises porous carbon adsorbent base treated with caustic agent and reducing agent, between the inlet and the outlet.
A method of sterilizing cannabis, the method comprising:
- placing cannabis in a sterilization chamber that contains an atmosphere that includes air,
- dispensing hydrogen peroxide vapor into the air atmosphere in the sterilization chamber,
- for a period of time, allowing the hydrogen peroxide to inactivate biologically active materials contained in the cannabis,
- after the period of time, removing the air from the sterilization chamber as exhaust air and contacting the exhaust air with carbon adsorbent that includes caustic agent and reducing agent to reduce a concentration of the hydrogen peroxide in the exhaust air.
A method of sterilizing a hospital room, method comprising:
- dispensing hydrogen peroxide vapor into an air atmosphere within the room,
- allowing the hydrogen peroxide to contact surfaces in the room to sterilize the surfaces, and
- contacting the air atmosphere with carbon adsorbent that includes caustic agent and reducing agent, to allow hydrogen peroxide to contact surfaces of the carbon adsorbent to reduce a concentration of the hydrogen peroxide in the air atmosphere.
Dependencies are inferred from the claim text.