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Copper Recovery from Spent Etchant Cupric Chloride Solution by Electrowinning Method | ||
| Journal of Engineering | ||
| Article 1, Volume 13, Issue 2, 2007, Pages 1344-1353 | ||
| Authors | ||
| Zuhaira N. Hanna; Aprael S. Yaro | ||
| Abstract | ||
| Recovery of copper from actual spent etchant cupric chloride solution used in manufacturing of printed circuit board (PCB) containing 124 g/l Cu^+2 ions concentration and 60 g/l hydrochloric acid was investigated in a batch mode jacketed tank. This tank was constructed with inner dimensions of 19×10×15 cm^3. Cylindrical rode-shape titanium was used as cathode, while two rectangular shaped graphite were used as anodes. The parameters studied were: current density (0.16-0.30 A/cm^2), copper concentration in etchant solution (30-124 g/l) and the temperature (25-45 °C). The highest current efficiency obtained was about 92% and the lowest power consumption achieved was about 2.7 W.h/g within the temperature range 25-35 °C. | ||
| Keywords | ||
| Electro winning; copper recovery; spent etchant; cupric chloride | ||
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