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Sorption of Np(V) onto hybrid clay-based materials: Montmorillonite-melanoidin

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Abstract

The sorption of Np(V) onto hybrid clay-based materials (HCMs) prepared from montmorillonite in the Maillard reaction was studied at environmentally relevant concentrations. Above pH 7, the sorption of Np(V) on HCM is weaker than that on the pure montmorillonite, with a reversed trend observed at lower pH values. With increasing pH, increasing amounts of melanoidins are released into the aqueous phase, thus the complexation of Np(V) in the aqueous phase was studied as well. The complexation in the aqueous phase is obviously increasing the mobility of Np(V). The sorption of Np(V) on the HCM is compared to the prediction by the linear additive model.

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Authors and Affiliations

  1. School of Medicine, Catholic University of Valencia, C/Quevedo 2, 46001, Valencia, Spain

    V. Vicente Vilas

  2. Institute of Nuclear Chemistry, Johannes-Gutenberg University Mainz, Fritz-Straßmann-Weg 2, 55128, Mainz, Germany

    J. V. Kratz

Authors
  1. V. Vicente Vilas
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  2. J. V. Kratz
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Correspondence to V. Vicente Vilas.

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Published in Russian in Radiokhimiya, 2012, Vol. 54, No. 1, pp. 62–65.

The text was submitted by the authors in English.

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Vicente Vilas, V., Kratz, J.V. Sorption of Np(V) onto hybrid clay-based materials: Montmorillonite-melanoidin. Radiochemistry 54, 64–68 (2012). https://doi.org/10.1134/S1066362212010092

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  • DOI: https://doi.org/10.1134/S1066362212010092

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