Removal of some radioactive nuclides by in-situ precipitation with ion exchange materials

In-situ precipitation of some radwaste elements with cerium(IV)- and tin(IV ) antimonates (Cs-134, Co-60, Sr-85 and Eu-152,Eu-154) together with 10(-4) M of each Cs+, Co2+, Sr2+ and/or Eu3+ have been prepared and found that al l the product precipitates prefer the ions of smaller ionic radii. The dist ribution coefficients of Cs+, Co2+, Sr2+ and Eu3+ for all products were det ermined and it was found that the separation factors between neighbouring p airs of metal ions are larger on tin(IV) antimonate (SnSb) than cerium(IV) antimonate (CeSb). The adsorption of Cs+, Co2+, Sr2+ on CeSb and SnSb colum n beds was investigated and the preliminary results given here demonstrate the promise of potential applicability of these materials in marry separati ons connected with nuclear fuel cycle activities.