| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a direct recovery of an aiming valuable metal from waste water including the metal ion, by an electrolysis process without generating Cl, an electric energy saving in the recovery process by electrolysis, and a method for regenerating an etching solution at the same time when recovering the valuable metal from waste water by electrolysis. SOLUTION: The method for recovering metal from a solution including the metal ions by electrolysis comprises applying minimum external voltage between both electrodes in an electrolysis process for generating an oxidation reaction by supplying a material which causes the oxidation reaction to an anode, and generating electrodeposition of metal based on the reduction of metal ions on a cathode.</p> |
