Fluid purification

Details Fluid purification Fluid purification

1991-05-20

1992-06-30

Hunt, Brooks H.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

With means applying electromagnetic wave energy or...

422186, 210748, 210763, 20415715, 20415744, B01J 1912

Patent

active

051261111

ABSTRACT:
A method of removing, reducing or detoxifying organic pollutants from a fluid, water or air, by contacting the fluid with a photoreactive metal semiconductor material in the presence of ultraviolet light of a wavelength to activate the photoreactive material, is improved by simultaneously contacting the photoreactive material with a substance that accepts electrons and thus inhibits hole-electron recombination. Such substance will be such as to readily accept electrons either from the conduction band or from superoxide ions, and to rapidly dissociate into harmless products.

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The Encyclopedia of Chemical Process Mead, William J., Equipment, pp. 686-694.
Tanaka et al., New Journal of Chemistry (NJOC) vol. 13, No. 1, 1989 Photocatalytic Degradation of Organohalide Compounds in Semiconductor Suspension with Added Hydrogan Proxide,
Tanka et al., Journal of Photochemistry and Photobiology A: (JOPP), Chemistry 45 (1989), pp. 155-159.

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