Fluid purification
AssigneeNutech Energy Systems Inc.
InventorsMichael K. Robertson, Robert B . Henderson
Life of this patent
Estimating the term…
Abstract
A purifier for water or air removes, reduces or detoxifies organic pollutants therefrom by causing the fluid to contact a matrix having surfaces with which a fixed anatase (TiO.sub.2) or other photoreactive metal semiconductor material is bonded, in the presence of light of wavelength that will activate the material.
Claims14
A method of removing, reducing or detoxifying organic pollutants or removing or killing microorganisms from a fluid, comprising bringing such fluid into contact with a photoreactive metal semiconductor material bonded with, to or into surfaces of a porous substrate including surfaces on opposite faces of said substrate, said substrate comprising base material through which the fluid can flow in intimate contact with the photoreactive material, said substrate being at least partially transparent to light at a wavelength to which the photoreactive material photoreacts, while directing light of said wavelength from a source onto the substrate to activate the photoreactive material so that part of said light passes through the substrate to activate the photoreactive material on substrate surfaces remote from the light source.
A method of removing, reducing or detoxifying organic pollutants or removing or killing microorganisms from a fluid, comprising bringing such fluid into contact with a photoreactive metal semiconductor material bonded with, to or into surfaces of a substrate including surfaces on opposite faces of said substrate, said substrate having the form of a plurality of layers of a base material, at least one of said layers being at least partially transparent to light at a wavelength to which the photoreactive material photoreacts, while directing light of said wavelength from a source onto the substrate to activate the photoreactive material so that part of said light passes through the substrate to activate the photoreactive material on layers of the substrate remote from the light source and surfaces of the substrate remote from the light source.
Dependencies are inferred from the claim text.