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Silver is recovered from the photographic processing solutions for two reasons—economic and regulatory (compliance). The table below presents an overview of the three most common types of silver recovery. The technique you choose and the method you use depends on a number of factors including:
15 sty 2019 · This post will show you my experience in extracting the silver from exhausted film fixers. According to a Kodak document, J-215 Recovering Silver from Photographic Processing Solutions (1999), there are 3 methods to desilverize your fixer: electrolysis (>90% efficiency); metal replacement (>95% efficiency); precipitation (>99% efficiency).
Several technologies exist for recovering silver on-site. The most common methods of on-site recovery from the fixer and bleach-fix processing solutions involve metallic replacement, electrolytic recovery and chemical precipitation.
The major opportunities to recover silver have been efficiently exploited for many years. Every processing laboratory for mo tion picture film and for amateur and professional color and black-and-white materials recovers the silver that photographers 163 W. J. Streeter, The Silver Mania
9 mar 2002 · professional users are mandated by law to recover silver before . dumping fixer. A chemical product widely used for silver recovery in . Europe is Tetenal's Exargent. You will get a black silver rich paste . which can be sold for further treatment.
We recover the silver from many types of films used in the photographic industry and can recycle used films, virgin films, and other virgin silver-bearing photo papers. Examples include: Medical and industrial X-rays; Lithographic films; Black and white films; Consumer films; Professional films; The scrap films are treated and processed in our ...
