| 摘要 |
The invention concerns a method for separating metal ions absorbed on a resin consisting in: suspending or percolating the cationic exchange resin charged with a polar solvent containing an eluting agent or a mixture of eluting agents containing at least an organic or mineral ligand complexing the metal ions to be separated; in circulating a direct electric current, whether constant or not, in the charged eluting solution forming an electrolyte so as to recuperate at least a metal by deposition; and finally by repeating, if necessary, the last step by setting up one or several cathode(s) made of another metal and by re-adjusting the cathode potential and the anode/cathode potential difference to new values, depending on the new type of metal to be recuperated. The invention also concerns an installation for treating/recycling photographic bath waste comprising an exchanger (2, 2') connected to a tank (3) for waste bath to be treated, to a treated waste bath tank (4), to a regenerating solution tank (5) and to an electrolysis vessel (6). |
