Decontamination of radioactive liquid waste with hexacyanoferrate(II)

摘要

Concerning decontamination of a radioactive liquid waste which includes seawater and nuclides from irradiated fuels and activated materials, the in-situ generation of metal hexacyanoferrates(II) by adding potassium hexacyanoferrate(II) and co- decontamination of ~(134,137)Cs and some activation products were investigated. Transition metals arising from seawater in the waste solution precipitates in the preference order of Zn>Ni>Co>Mn according to their solubility. The precipitate adsorbs ~(134,137)Cs, and decontamination will be attained by the following sedimentation with a polymer and filtration, as an example. Decontamination factor of activated products, ~(60)Co and ~(54)Mn, is dependent on concentration of hexacyanoferrate(II) in the solution.