(86j) Integration of Sustainable Extraction and Recovery of Energy-Relevant Metals Using Aldoxime-Based Ligands Systems from Unconventional Resources

The development of renewable energy infrastructure relies heavily on energy-relevant metals, but current industrial mining practices pose sustainability issues. To address this, new technologies are needed to explore alternative feedstocks and greener hydrometallurgical extraction processes. Although aldoxime-based ligands are currently used in industry to recover Cu in acidic conditions, this process has several environmental drawbacks and is not fully understood. Unconventional resources such as e-waste, in particular waste printed circuit boards and batteries, are particularly important as they contain many critical elements. In this study, we focus on the selective recovery of Ni using aldoxime-based ligands, even in the presence of other competing elements like Co, Mn, Zn, and Cu. We investigated the mechanisms of complexation for these metals and optimized operating conditions to extract them in a solvent extraction system. Finally, we explore the changes in electrochemical behavior using these ligand systems to selectively recover them as valuable products.