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

摘要

in-situ precipitation of some radwaste elements with ceriumI(IV)- and tin(IV) antimonates (~134Cs, ~60Co,~85Sr and ~152,154Eu) together with 10~4 M of each Cs~+, Co~2+, Sr~2+ and/or Eu~3+ have been prepared and found that all the product precipitates prefer the ions of smaller ionic rdii. The distribution coefficients of Cs~2+, Co~2+, Sr~2+ and Eu~3+ for all products were determnined and it Was found that the separation factors between neighbouring pairs of metal ions are larger on Tin(IV) antimonate (SnSb) than cerium(IV) antimonate (CeSb).