Transfer of cobalt and nickel from sulphate solutions to spent electrolyte through solvent extraction and stripping 廢電解液經由溶劑萃取法分離出鈷和鎳 出處:Separation and Purification Technology 51 (2006) 265–271作者:Kyung Ho Park , B. Ramachandra Reddy , Sun Hee Jung , D. Mohapatra