コバルトめっき水洗液をモデルとした均一液液抽出法（HoLLE）を用いる希少金属濃縮法の開発

抄録

A rare metal concentration method from plating rinse water using homogeneous liquid-liquid extraction (HoLLE) with n-perfluorocarboxylic acid (C₆-C₈) was developed. After HoLLE, the volume ratio (V_a/V_s) of the aqueous phase (V_a) and the sedimented liquid phase (V_s) was 1,430 (50 mL → 0.035 mL).Of the cobalt, 99.7 % was extracted into the sedimented liquid phase.