B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
204/83
B01J 47/08 (2006.01) B01J 39/00 (2006.01) B01J 39/10 (2006.01) C25C 1/00 (2006.01)
Patent
CA 2035187
A first metal, for example a transition metal such as cobalt, having an insoluble hydroxide is separated from a second metal such as lithium having a soluble hydroxide in an aqueous liquid containing dissolved rations of the metals. The cations are firstly absorbed onto a cation exchange material by electrochemical ion exchange and the second metal then selectively eluted by electrochemical ion exchange under sufficiently high pH conditions, e.g. to 10-13, in a closed loop. Finally, the transition metal is eluted by electrochemical ion exchange under sufficiently low pH conditions, e.g. acidic such as 1-2. The method is applicable to separating trace quantities of Co (e.g, as Co-60) from larger quantities of Li in aqueous solution.
Bridger Nevill John
Neville Mark David
Turner Andrew Derek
Accentus Plc
Gowling Lafleur Henderson Llp
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