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Effect of EDTA on plutonium migration

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Abstract

Widely present in the mixed wastes at the Hanford site, ethylenediametetraaceticacid (EDTA) can solubilize radionuclides such as plutonium and may increasetheir mobility in the environment. We have evaluated the sorption of Pu(IV)onto Hanford soil in the presence and in the absence of EDTA through laboratory-basedexperiments at ambient temperature and atmosphere. The sorption ratio (R%)was determined as a function of EDTA concentration and solid-liquid ratio.The sorption decreased significantly when EDTA concentration increased. Thediffusion of Pu(IV)–EDTA was relatively fast, with an effective diffusioncoefficient, D e = 3.54 . 10 –6 cm 2 /s at pH 5.25.

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Authors and Affiliations

  1. Lawrence Livermore National Laboratory, The G.T. Seaborg Institute for Transactinium Sciences, P. O. Box 808, L-231, Livermore, CA, 94551-0808, USA

    E. R. Sylwester

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  1. E. R. Sylwester
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Sylwester, E.R. Effect of EDTA on plutonium migration. Journal of Radioanalytical and Nuclear Chemistry 250, 47–53 (2001). https://doi.org/10.1023/A:1013260029269

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