Elution Behavior of Strontium from Zeolite Columns with Inorganic Salt and EDTA Solutions

抄録

The elution behavior of Sr sorbed on zeolite columns was investigated in connection with the distribution coefficient K_d between desired zeolites and aqueous solutions. The K_d values decreased with increasing concentrations of coexisting inorganic cations and EDTA. The retention volume V_R on zeolite column was predicted from the K_d value. An EDTA solution was desirable for the quantitative elution of sorbed Sr from the column owing to the low K_d value reduced by complex formation with EDTA. The column efficiency and the elution per-centage were improved with increasing temperature and decreasing flow rate. The structure of zeolite A remained unaltered after the repetitive use as the column packing.