Silver recovery from silver-rich photographic processing solutions by copper


Aktas S.

CANADIAN METALLURGICAL QUARTERLY, cilt.47, ss.37-43, 2008 (SCI İndekslerine Giren Dergi) identifier

  • Cilt numarası: 47 Konu: 1
  • Basım Tarihi: 2008
  • Dergi Adı: CANADIAN METALLURGICAL QUARTERLY
  • Sayfa Sayıları: ss.37-43

Özet

The present work investigates silver recovery from silver-rich photographic processing solutions by copper. The effects of different reaction parameters on silver recovery efficiency were studied in detail. Parameter optimization was also carried out. The possibility of recovering silver with more than 99% efficiency was demonstrated under both air and argon atmospheres. In the latter case, more than 99% recovery efficiency was achieved at an agitation rate of 875 rpm for 8 minutes. When cementation was carried out under air, the silver recovery efficiency decreased with increasing time and agitation rate. This decrease can be attributed to the redissolution of cemented silver into the solution. The solution pH was also shown to influence the efficiency of silver recovery by copper.