Fix and bleach-fix bath desilvering

Details Fix and bleach-fix bath desilvering Fix and bleach-fix bath desilvering

1972-09-21

1977-07-26

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

96 50A, 96 61R, G03C 526, G03C 532, G03C 538

Patent

active

040380807

ABSTRACT:
Silver is removed from used fix or bleach-fix baths by adding a compound of the general formula: ##STR1## wherein: X is an oxygen atom or imino group, R is an aryl, or a group of the formula

REFERENCES:
patent: 1448475 (1923-03-01), Weisberg
patent: 2503104 (1950-04-01), Farber
patent: 2688548 (1954-09-01), Reynolds
patent: 2688549 (1954-09-01), James et al.
patent: 3700450 (1972-10-01), Cooley

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