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Actinide Nanoparticle Research pp 1–30Cite as

Actinide-Nanoparticle Interaction: Generation, Stability and Mobility

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Abstract

Actinide ions are widely considered immobile under environmental conditions relevant to their disposal notably under reducing conditions prevalent in subsoil systems. Colloid formation is, however, known to increase their mobility. Observations of this in environmental systems are regularly reported. Different processes may lead to actinide colloid formation, by either generation of polymeric oxide/hydroxide nanoparticles or sorption to already existing or neo-formed ground water colloids. In order to assess actinide mobilization by colloidal species, the cascade of individual colloidal processes under given geochemical conditions must be considered and quantified: colloid formation, actinide–colloid interaction, colloid stabilization and migration. This chapter describes and discusses actinide colloid reactions with a focus on the underlying mechanisms.

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Acknowledgments

Part of the studies described here were funded by the Federal Ministry of Economics and Technology (BMWi) under the joint KIT-INE, GRS research project “KOLLORADO & KOLLORADO 2” and the SKB/KTH “Colloid project”. We also want to thank all organizations contributing to the funding of the Colloid Formation and Migration (CFM) project, namely: ANDRA (France), BMWi (Germany), JAEA (Japan), CRIEPI (Japan), AIST (Japan), NAGRA (Switzerland), POSIVA (Finland) and SKB (Sweden).

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  1. Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), 3640, 76021, Karlsruhe, Germany

    Horst Geckeis, Thomas Rabung & Thorsten Schäfer

  2. Institute of Geological Sciences, Hydrogeology Group, Freie Universität Berlin, 12249, Berlin, Germany

    Thorsten Schäfer

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  1. Horst Geckeis
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Correspondence to Horst Geckeis .

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  1. Dept. Chemistry, Lomonosov Moscow State University, Leninskie Gory 1/3, Moskva, 119992, Russian Federation

    Stepan N. Kalmykov

  2. Inst. Nukleare Entsorgungstechnik, Forschungszentrum Karlsruhe, Karlsruhe, Germany

    Melissa A. Denecke

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Geckeis, H., Rabung, T., Schäfer, T. (2011). Actinide-Nanoparticle Interaction: Generation, Stability and Mobility. In: Kalmykov, S., Denecke, M. (eds) Actinide Nanoparticle Research. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11432-8_1

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