Treatment method of sulfuric acid acidic solution containing bismuth

摘要

PURPOSE:To selectively separate and remove soluble bismuth as one of impurities accumulated in a soln. acidified with sulfuric acid as an electrolytic soln. by bringing activated carbon into contact with the soln. contg. bismuth so as to allow the bismuth to be adsorbed on the carbon. CONSTITUTION:Impurities accumulate in a soln. acidified with sulfuric acid as an electrolytic soln. in a stage for electrolytically refining steel. Activated carbon is brought into contact with the soln. Soluble bismuth as one of the impurities is selectively separated and removed by such a simple operation.