Recovery of silver

Details Recovery of silver Recovery of silver

G - Physics

03

F

G03F 7/30 (2006.01) C12S 9/00 (2006.01) C22B 11/00 (2006.01) G03F 7/06 (2006.01)

Patent

CA 2134585

18 ABSTRACT A method of silver recovery is provided in which a radiation sensitive device comprising a gelatin-based silver-containing coating and a substrate is treated with a wash liquor comprising an aqueous solution containing an enzyme capable of causing degradation of the gelatin, and a flocculating agent. This treatment removes the coating from the substrate and flocculates the non-useful silver, which is then separated and recovered.

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