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Critical mineralsCritical minerals are essential for the green energy transition, and yet their production is geographically concentrated due to limited geological availability and extractionExtraction technologies. Traditional hydrometallurgical methods are struggling to process low-grade ores and secondary sources (e.g., mining waste and e-waste) due to high contaminant levels and low concentrations of valuable metals. (Electro)HydrometallurgyHydrometallurgy offers a promising aqueous processing approach by integrating electrochemical leachingLeaching and separation techniques, enabling higher recoveryRecovery rates with reduced environmental impactEnvironmental impacts. In brine processing to obtain LiBrine processing, membrane separation using commercial materials has shown success, while novel polymeric membranes tailored for Li represent a significant advancement ielectrochemical approachn electrodialysis. Additionally, supported liquid membranesSupported liquid membranes combine the benefits of membrane and solventExtraction extractionSolvent extraction techniques, offering a pathway for the selective recovery of critical mineralsCritical minerals such as Li, and rare earthRare earths elementsRare earth elements such as La, Nd, and Y. These innovations can enhance sustainable mineral recoveryRecovery and supply chainSupply chains resilience.

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Electrochemical-Based Techniques in Hydrometallurgical Processes Towards Sustainable Mining

  • 会议论文

  • 发表日期：

    2026年

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  • Amilton Barbosa Botelho Junior,
  • Yet-Ming Chiang

摘要

Critical mineralsCritical minerals are essential for the green energy transition, and yet their production is geographically concentrated due to limited geological availability and extractionExtraction technologies. Traditional hydrometallurgical methods are struggling to process low-grade ores and secondary sources (e.g., mining waste and e-waste) due to high contaminant levels and low concentrations of valuable metals. (Electro)HydrometallurgyHydrometallurgy offers a promising aqueous processing approach by integrating electrochemical leachingLeaching and separation techniques, enabling higher recoveryRecovery rates with reduced environmental impactEnvironmental impacts. In brine processing to obtain LiBrine processing, membrane separation using commercial materials has shown success, while novel polymeric membranes tailored for Li represent a significant advancement ielectrochemical approachn electrodialysis. Additionally, supported liquid membranesSupported liquid membranes combine the benefits of membrane and solventExtraction extractionSolvent extraction techniques, offering a pathway for the selective recovery of critical mineralsCritical minerals such as Li, and rare earthRare earths elementsRare earth elements such as La, Nd, and Y. These innovations can enhance sustainable mineral recoveryRecovery and supply chainSupply chains resilience.