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    STUDIA CHEMIA - Ediţia nr.Special Issue 1 din 2009  
         
  Articol:   ELECTROCHEMICAL METALS RECOVERY FROM ELECTRONIC WASTES. PART. I. COPPER RECOVERY FROM SYNTHETIC SOLUTIONS.

Autori:  FLORICA IMRE-LUCACI, SORIN-AUREL DORNEANU, PETRU ILEA.
 
       
         
  Rezumat:  This work presents the results concerning the copper recovery by electrodeposition from a synthetic solution simulating the dissolution of metallic part of electronic wastes in H2SO4. Batch electrolyses were carried out on graphite rotation disc electrode, at cathodic potentials between -100 and -300 mV vs. Ag/AgCl reference electrode and rotation rate from 100 to 700 rpm. The purity of cathodic deposit was evaluated by ICP-MS spectroscopy. The copper recovery efficiency from the synthetic solutions depends on applied cathodic potential. At more negative values (-300 mV), the electrodeposition rate increases, but the current efficiency and the deposit quality decrease. The electrodeposition tests confirm the possibility of copper recovery from a synthetic solution simulating the dissolution of the metallic part of electronic wastes in H2SO4, and the purity of the copper deposits are greater than 99 % in all of the tests.

Keywords: materials recycling; copper recovery, electronic wastes
 
         
     
         
         
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