Hydrometallurgical Purification from Leach Liquor of Printed Circuit Board with Cyanex 272

Increasing volumes of solid waste are generated worldwide, due to the continuous technological advances, the electronic scrap is part of these waste, requiring the study of recycling processes to stimulate this activity or the reuse of its components. The separation of nickel from sulphate leach solution, which also containing iron, zinc and aluminium was carried out using bis-(2,4,4-trimethylpentyl) phosphinic acid (Cyanex 272) as extractant, in order to determinate the effects of pH and temperature. The number of stages required for extraction was also assessed; the results showed that the ions metals extraction increased with the pH increasing, on the other hand, with the increasing temperature was found a behavior no favorable for all metals, however, under conditions used in this paper the purification of solution containing nickel was possible.