METHOD FOR RECOVERY OF NIKEL AND REGENERATION OF ETCHING SOLUTION FROM A SPENT FECL3 ETCHING SOLUTION

摘要

Disclosed herein is a method for separating ions present in a spent etching solution and regenerating or recovering of the separated ions. According to the method, nickel (Ni) is recovered from a spent etching solution containing nickel and ferric chloride (FeCI3) and at the same time, a ferric chloride etching solution is regenerated from the spent FeCI3 etching solution.