Recovery of silver from photographic film

Details Recovery of silver from photographic film Recovery of silver from photographic film

1977-01-21

1978-06-06

Prescott, Arthur C.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204109, 204149, 204268, 204269, C25C 120, C25C 700, C25C 702

Patent

active

040935329

ABSTRACT:
Apparatus for reclaiming silver from solution. Photographic film is transported through a plurality of compartments within which fluids act upon the constituents in the film coating. One of the compartments contains fluid that includes a silver complex dissolved therein, and a silver precipitating unit is positioned within that compartment. The precipitating unit includes anode-cathode elements connected to a source of electrical potential for depositing silver upon the elements.

REFERENCES:
patent: 1925322 (1933-09-01), Hills
patent: 1959531 (1934-05-01), Hickman et al.
patent: 3397133 (1968-08-01), Sooryn
patent: 3451906 (1969-06-01), Weed
patent: 3658683 (1973-04-01), Lagier et al.
patent: 3715291 (1973-02-01), Bentley
patent: 3718552 (1973-02-01), Mortell
patent: 3779889 (1973-12-01), Loftfield
patent: 3964990 (1976-06-01), Noyden
patent: 4014764 (1977-03-01), Seiler et al.

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