Die Entfernung von Thiocyanationen aus wäßrigen Lösungen unter Verwendung stark basischer und schwach basischer Anionenaustauscher

After treatment of the anion exchanger resins from several manufacturers with FeCl₃ or CuSO₄ their capacity to take up thiocyanate ions increases by the factor 2 … 3. By regeneration with diluted sulphuric acid or hydrochloric acid after precipitation of the ferric or cupric hydroxide a thiocyanate solution of 10 and 15 g/l, respectively, is obtained, which can be reused. The hydroxides dissolved in acid are used for the treatment of the ion exchanger. The process is proposed for the regenerating of wastewaters containing thiocyanate.