Français
13. Sources of industrial silver pollution
In France, the main source of silver pollution is the photographic industry, which is the main user of silver (55% in 1999). Mirror-making and electroplating are the next two major uses.
13.1 Silvering and de-silvering waste (mirrors, electroplating, etc.)
These include silver electrolyte baths, desilvering solutions from the electronics and crafts sectors, and mirror silvering solutions. Reformed cyanide baths and electroplating rinse water must be decyanidized. They must not exceed 0.1 mg/L CN – when discharged. Cyanide is destroyed with sodium hypochlorite. Silver is recovered by electrolysis or fixed by resins. A special case is ammoniacal silver solutions used with a reducing agent for silvering mirrors....
The Ultimate Scientific and Technical Reference
This article is included in
Metal manufacturing processes and recycling
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Sources of industrial silver pollution
Bibliography
References
Major mining companies
-
Australia
Mount Isa Mines
Pasminco
-
Canada
Boliden Ltd
Echo Bay Mines
Noranda Inc
The Ultimate Scientific and Technical Reference
