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Limits of Cyanex 272 Selectivity for Cobalt Extraction in A Multi-Cationic Industrial Environment: Case Study of Lamikal, Lualaba (DRC)

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  • Mungwa Kalundu Gaylord

  • Kalunga Zugu Maryssa

  • Ndala Mbavu Bavon

  • Zeka Mujinga1,3,4,5

Abstract

This study examines the limits of Cyanex 272's absorption capacity in a complex industrial solvent extraction (SX) process for cobalt, applied at the LAMIKAL plants (Lualaba, DRC). The objective is to evaluate the actual performance of Cyanex 272 under multi-metal industrial conditions, where cobalt, copper and manganese coexist. Operating parameters such as pH, extractant concentration, organic/aqueous ratio (O/A) and contact time were optimised. The results show a cobalt extraction yield limited to 31.5%, compared to 98.6% for copper and 97.9% for manganese, revealing a low selectivity of Cyanex 272 towards cobalt in the presence of impurities. Recommendations are made to improve the selectivity of the process in a real industrial context.

Suggested Citation

  • Mungwa Kalundu Gaylord & Kalunga Zugu Maryssa & Ndala Mbavu Bavon & Zeka Mujinga1,3,4,5, 2025. "Limits of Cyanex 272 Selectivity for Cobalt Extraction in A Multi-Cationic Industrial Environment: Case Study of Lamikal, Lualaba (DRC)," International Journal of Innovative Science and Research Technology (IJISRT), IJISRT Publication, vol. 10(10), pages 2377-2387, October.
    • Handle: RePEc:cvr:ijisrt:2025:10:ijisrt25oct825
    DOI: 10.38124/ijisrt/25oct825
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