Coprecipitation phenomena during spent fuel dissolution. Part 1: Experimental procedure and initial results on trivalent ion behaviour (original) (raw)
1996, Journal of Nuclear Materials
Coprecipitation may be a significant process in controlling radionuclide release during spent fuel dissolution in geological disposal. The coprecipitation behaviour of the trivalent elements Am. Cm and Eu with Na-polyuranates is studied in saline solutions. Experimental data are obtained by precipitation from a supersaturated solution of dissolved high burnup spent fuel in 5 m NaCI solution at pH values between 5.7 to 12. The resulting concentrations of dissolved Am, Cm and Eu were found similar to those observed in spent fuel leaching experiments and were found to be considerably lower than expected, if the formation of pure Am(OH) 3, Cm(OH) 3 and Eu(OH) 3 solid phases is assumed. Coprecipitation phenomena and formation of solid solutions are suggested to be responsible for the lower solubility concentrations.
Sign up for access to the world's latest research.
checkGet notified about relevant papers
checkSave papers to use in your research
checkJoin the discussion with peers
checkTrack your impact
Loading Preview
Sorry, preview is currently unavailable. You can download the paper by clicking the button above.