Method for recovering silver from a photographic fixing...

Details Method for recovering silver from a photographic fixing... Method for recovering silver from a photographic fixing...

C - Chemistry, Metallurgy

25

C

C25C 1/20 (2006.01)

Patent

CA 2070998

2070998 9109159 PCTABS00005 Silver is able to be recovered from a photographic fixing solution by circulating the solution through a unit separate from, but connected to, a main unit. In the separate unit the solution is subjected to electrolysis by anodic and cathodic electrodes. The density of the current is limited to 100 A/m2 and the voltage is controlled up to a maximum of 1.4 V. The supply of current and voltage is self-regulating within these limits so that no deposits of sulphide from the solution being treated occurs.

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