Ion exchange properties of zirconyl phosphatess - PART II - Ion exchange equilibria on zirconyl phosphate

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  • Leon Baetslé
  • Daniel Huys

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The tracer ion exchange equilibria 134Cs-H+, 86Rb-H+, 89Sr-H+, 152Eu-H+, 134Cs-NH4+, 89Sr-Na+ and 89Sr-NH4+ on zirconyl phosphate have been studied in the concentration range 0.001-0.5 M; all obey the mass action law except the 89Sr-Na+ equilibrium. The distribution coefficients indicate that a selective separation of 137Cs from a 0.2 M HNO3 fission product solution can be effected with a very high decontamination factor. Some macro-exchange systems have been studied in order to evaluate the interference of macro-quantitities of cations on zirconyl phosphate in the H+ form. The equilibrium constants of the systems Na+-H+, K+-H+, Ca2+-H+ and Sr2+-H+ are very low, but the difference between the constants of two neighbouring cations is relatively large. The adsorption affinity series of the ions in acid solution seems to differ slightly from the lyotropic series, NH4+ and H+ ions displaying an uncommon behaviour.


Original languageEnglish
PublisherSCK CEN
Number of pages13
Publication statusPublished - Feb 1961

Publication series

NameSCK CEN Reports
PublisherSCK CEN

ID: 7859206