Purification system

Details Purification system Purification system

1995-02-22

1996-09-10

McCarthy, Neil

Liquid purification or separation

Processes

Utilizing electrical or wave energy directly applied to...

210757, 210763, 4221863, C02F 148

Patent

active

055543006

ABSTRACT:
The present invention relates to a method for the purification of contaminated fluids by photocatalytic treatment. In accordance with the invention, an oxidation state where contaminant molecules are oxidized and/or a reduction state where contaminant molecules are reduced are employed to purify a contaminated fluid. The reduction state, where certain contaminant molecules are reduced, is induced by providing a reactant, such as citric acid, in the presence of an excited photocatalyst. A reduction state may alternate to an oxidation state, where contaminant molecules are oxidized, by the addition of an oxidizing agent, such as oxygen.

REFERENCES:
patent: 4446236 (1984-05-01), Clyde
patent: 4615799 (1986-10-01), Mortensen
patent: 4694179 (1987-09-01), Lew et al.
patent: 4892712 (1990-01-01), Robertson et al.
patent: 5118422 (1992-06-01), Cooper et al.
patent: 5174877 (1992-12-01), Cooper et al.
patent: 5332508 (1994-07-01), Foster et al.
User's manual SCT Membranes-"Membrolox.RTM.".

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