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Gas-solid photocatalytic oxidation of environmental pollutants

  • US 5,045,288 A
  • Filed: 09/15/1989
  • Issued: 09/03/1991
  • Est. Priority Date: 09/15/1989
  • Status: Expired due to Term
First Claim
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1. The method of removing halogenated and non-halogenated volatile and non-volatile organic contaminants from a gaseous stream comprising the steps of:

  • mixing a gaseous oxygen bearing substance with the contaminated gaseous stream;

    contacting the contaminated gaseous stream and gaseous oxygen bearing substance mixture with a solid catalyst; and

    exposing the solid catalyst and contacted contaminated gaseous stream and gaseous oxygen bearing substance mixture to UV light having a wave length not greater than approximately 600 nm, to initiate under reaction conditions preselected to prevent formation of a liquid phase, a gas/solid photocatalytic reaction to convert said halogenated and non-halogenated organic contaminants, volatile and non-volatile, into primarily H2 O and CO2 and HX, where X is selected from the group consisting of chlorine, bromine and iodine.

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