Metallic cations extraction in industrial waste

Presentation

The device and associated process are both built around an electrochemical transfer junction (ETJ) made of Chevrel phases. It enables selective transfer between 2 electrolytes from different cations (Co, Ni, Cd, Zn, Mn, Cu). The material used for the ETJ  allows a controlled and reversible transfer.

Competitive advantages

• A reversible process;
• Selectivity, even for 2 divalent cations;
• An impermeable wall in case of electrical field absence (no diffusion);
• Possible use of non aqueous electrolytes and of different electrolytes in the two separate tubs;
• 100% cations transferred.

Applications/Markets

• Treatment of liquid industrial wastes containing metallic cations such as Co, Ni, Cu, Cd, Zn, and Mn
• For example, leachates of used batteries to valorize the contained metallic elements

Intellectual property

• Patent delivered: FR 291807;
• Extensions for Europe, Canada, USA, Chine and Japan.

Laboratory

Institut Jean Lamour (IJL)