Recovery of copper (II) and chromium (III,VI) from electroplating-industry wastewater by ion exchange


Yalcin S. , Apak R. , HIZAL J., AFSAR H.

SEPARATION SCIENCE AND TECHNOLOGY, cilt.36, ss.2181-2196, 2001 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 36 Konu: 10
  • Basım Tarihi: 2001
  • Doi Numarası: 10.1081/ss-100105912
  • Dergi Adı: SEPARATION SCIENCE AND TECHNOLOGY
  • Sayfa Sayısı: ss.2181-2196

Özet

Two laboratory-scale separation processes have been developed for the recovery of copper (II) from acidic and cyanide-containing alkaline wastewater of electroplating industries. Acidic bath wastes were treated with Dowex 50X8, a strongly acidic cation-exchange resin, and the retained copper was eluted with H2SO4. The cyanide-containing alkaline bath waste was first oxidized with excessive hypochlorite, then neutralized, and recovered by the use of Amberlite IRC-718 chelating resin. Copper was eluted with H2SO4.