Concentric electrochemical device

An electrochemical device for reducing a dissolved metal of a liquid stream, the electrochemical device comprising:

• a metal-containing cathode core and a carbonaceous anode;
• a separator arranged between the metal-containing cathode and the carbonaceous anode;
• and
• either one of:
• a conductive anode current collector housing on the carbonaceous anode, the conductive anode current collector housing comprising at least one inlet and outlet for the liquid stream;
• or
• a non-conductive cathode current collector housing on the carbonaceous anode, the non-conductive cathode current collector housing comprising at least one inlet and outlet for the liquid stream, and a metal shim arranged between the carbonaceous anode and the non-conductive cathode current collector housing.

An electrochemical device for reducing a dissolved metal of a liquid stream, the electrochemical device comprising:

• a carbonaceous anode and a metal-containing cathode;
• a conductive anode current collector rod structure at a core of the electrochemical device and in contact with the carbonaceous anode;
• a separator arranged between the carbonaceous anode and the metal-containing cathode;
• and
• either one of:
• a conductive cathode current collector housing on the metal-containing cathode, the conductive cathode current collector housing comprising at least one inlet and outlet for the liquid stream;
• or
• a non-conductive cathode current collector housing on the metal-containing cathode, the non-conductive cathode current collector housing comprising at least one inlet and outlet for the liquid stream, and a metal shim arranged between the metal-containing cathode and the non-conductive cathode current collector housing.