Method for the heterogeneous catalytic photodegradation of pollu

Details Method for the heterogeneous catalytic photodegradation of pollu Method for the heterogeneous catalytic photodegradation of pollu

1990-09-10

1991-10-01

Dawson, Robert A.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210763, 210764, 210908, 422186, 250372, B01D 6100, B01S 1908

Patent

active

050531360

ABSTRACT:
A method for purifying water containing pollutant mixtures is described, which uses a reactor containing a semiconductor as reaction catalyst and a lamp which emits radiation having a wavelength of less than 400 nm. The reactor, characterized in that its walls allow water and the pollutant substances to pass through, is immersed in the water to be purified so that the pollutants contained in it reach the reactor interior where they are adsorbed on the semiconductor activated by light radiation, and are then degraded.

REFERENCES:
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patent: 4478699 (1984-10-01), Halmann et al.
patent: 4749657 (1988-06-01), Takahashi et al.
patent: 4780200 (1988-10-01), Bond et al.
patent: 4788038 (1988-11-01), Matsunaga
patent: 4888101 (1989-12-01), Cooper
patent: 4892712 (1990-01-01), Roberson et al.

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