Decontamination of a photographic effluent by treatment with a fibrous polymeric alumino-silicate
AssigneeEastman Kodak Company
InventorsDidier J. Martin, Oliver J. Poncelet, Jeannine Rigola
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Abstract
The invention concerns a method of decontaminating a photographic effluent. The method comprises contacting the effluent with a fibrous polymeric alumino-silicate and, optionally, with a cerium-based catalyst on an activated carbon membrane. The iron, silver, thiosulphate and organics contents of photographic effluents are reduced.
Claims10
Method for treating a photographic effluent to decontaminate it for discharge or reuse, comprising the step of contacting this effluent with a material consisting essentially of fibrous polymeric alumino-silicate having the formula AlxSiyOz where z is between 1 and 10 and x:y is between 1 and 3.
Method for treating a photographic effluent to decontaminate it for discharge or reuse, comprising the step of contacting this effluent with a material consisting essentially of an aqueous solution of a fibrous polymeric aluminosilicate having the fonnula AlxSiyOz wherein z is between 1 and 10 and x:y is between 1 and 3.
Method for treating a photographic effluent to decontaminate it for discharge or reuse, comprising the step of passing this effluent through a cartridge lined with a material consisting essentially of a fibrous polymeric aluminosilicate having the formula AlxSiyOz wherein z is between 1 and 10 and x:y is between 1 and 3, said fibrous polymeric aluminosilicate being deposited on a porous support.
Dependencies are inferred from the claim text.