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Factors affecting the electrochemical behaviour of copper anodes under simulated electrorefining conditions

Kucharska-Giziewicz, E. A., Mackinnon, D. J.

2022encopperpassivationelectrorefininganodesmetallurgy

Abstract

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The rapid increase in electronic waste (e-waste) presents significant challenges for the sustainable management of valuable metals such as copper and silver. This study investigates anode passivation mechanisms during the electrorefining of copper derived from secondary sources, focusing on how varying silver content affects passivation dynamics. Using cyclic voltammetry, we examined the electrochemical behavior of silver-containing copper anodes, emphasizing the relationship between silver concentration and passivation duration. Our findings reveal that higher silver content correlates with a decreased passivation time, resulting from the formation of adhesive surface layers that impede copper dissolution. This phenomenon poses constraints on processing e-waste due to the limited impurity threshold allowable for efficient copper recovery. The economic implications of silver recovery, particularly in instances where its value may surpass that of copper, highlight the importance of optimizing processing parameters to mitigate productivity losses in refining operations. The results underscore the necessity for innovative processing techniques that accommodate varying impurity levels in copper scrap to enhance recovery rates and support the circular economy within metal production industries.

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Cite This Work

@article{f18ad4f3-dd31-4ecf-8b71-a57eb7fcc829,
  title={Factors affecting the electrochemical behaviour of copper anodes under simulated electrorefining conditions},
  author={Kucharska-Giziewicz and E. A. and Mackinnon and D. J.},
  year={2022},
  language={en}
}
TY  - JOUR
TI  - Factors affecting the electrochemical behaviour of copper anodes under simulated electrorefining conditions
AU  - Kucharska-Giziewicz
AU  - E. A.
AU  - Mackinnon
AU  - D. J.
PY  - 2022
LA  - en
ER  -

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