合成無機吸着剤によるめっき浴中の微量不純物の除去-2-シリカ-チタニア吸着剤を用いたカラム流通法によるめっき浴中の鉛(2)と亜鉛(2)の分離

The separation of lead (II) and zinc (II) in plating baths was performed with silica-titania gel by means of column operation. Peculiarities were observed in the adsorption behavior of zinc (II) in the initial stage, and they are discussed in relation to the sodium ion as the adsorption site on the gel. It was found that both species of metal ions adsorbed were completely eluted with nitric acid, and that the gel could then be reused repeatedly.