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J Colloid Interface Sci. 2017 Jan 01;485:59-64. doi: 10.1016/j.jcis.2016.09.013. Epub 2016 Sep 13.

Sorption and redox speciation of plutonium at the illite surface under highly saline conditions.

Journal of colloid and interface science

Rémi Marsac, Nidhu Lal Banik, Johannes Lützenkirchen, Alexandre Diascorn, Kerstin Bender, Christian Michael Marquardt, Horst Geckeis

Affiliations

  1. Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe, Germany; Ecole Nationale Supérieure de Chimie de Rennes, UMR CNRS 6226, 11 Allée de Beaulieu, F-35708 Rennes Cedex 7, France(1).
  2. Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe, Germany; Institute for Transuranium Elements, European Commission, P.O. Box 2340, D-76125 Karlsruhe, Germany(1).
  3. Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe, Germany. Electronic address: [email protected].
  4. Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe, Germany; Groupe d'Etudes Atomiques (GEA), Ecole des Applications Militaires de l'Energie Atomique (EAMEA). BCRM Cherbourg, CC19 50115 Cherbourg-Octeville Cedex, France(1).
  5. Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe, Germany.

PMID: 27643471 DOI: 10.1016/j.jcis.2016.09.013

Abstract

Natural groundwater may contain high salt concentrations, such as those occurring at several potential deep geological nuclear waste repository sites. Actinide sorption to clays (e.g. illite) under saline conditions has, however, been rarely studied. Furthermore, both illite surface and ionic strength may affect redox speciation of actinides like plutonium. In the present study, Pu sorption to illite is investigated under anaerobic conditions for 3

Copyright © 2016 Elsevier Inc. All rights reserved.

Keywords: Clay; Illite; Ion exchange; Plutonium; Redox; Saline; Sorption; Speciation; Surface complexation model

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