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New adsorbents from oil shales: Preparation, characterization and U, Th isotope adsorption tests

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Abstract

New activated adsorbents for radionuclides have been produced from Moroccan oil shales by pyrolysis of the natural material at 550 °C flowed by a KMnO4 activation. The texture and composition of the native rock and the adsorbents were studied before their use in tests for adsorption of radionuclides from standard solutions prepared from uranylnitrate and thorium nitrate in equilibrium with their daughters. The distribution coefficients between solutions containing U, Th and Ra and the adsorbents were evaluated by means of specific activities, measured by g-ray spectrometry. The adsorbents were observed to eliminate U, Th, Ra, Ac and Tl from aqueous solutions.

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Authors and Affiliations

  1. Laboratoire de Radiochimie, Faculté des Sciences Ben M'Sik, Université Hassan II-Mohammedia, BP 7955, Sidi Othman Casablanca, Morocco

    E. Khouya & S. Fakhi

  2. Laboratoire des Matériaux Thermostructuraux, Faculté des Sciences Ben M'Sik, Université Hassan II-Mohammedia, BP 7955, Sidi Othman Casablanca, Morocco

    H. Hannache

  3. Université de Nantes, 1 quai de Tourville, BP 13522, 44035, Nantes Cedex 01, France

    J. C. Abbe

  4. Laboratoire Subatech, UMR Ecole des Nantes, IN2P3/CNRS, Université de Nantes, 4 rue Alfred Kastler, BP 20722, 44035, Nantes Cedex 03, France

    Y. Andres

  5. Laboratoire des Composites Thermostructuraux, Université Bordeaux I allée de la Boétie, 33600, Pessac, France

    R. Naslain & R. Pailler

  6. Institut de Recherche Subatomique, UMR 7500 CNRS- IN2P3 et, Université Louis Pasteur 23 Rue de Loess, BP 28, F 67037, Strasbourg Cedex 2, France

    A. Nourredine

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  1. E. Khouya
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  2. S. Fakhi
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  3. H. Hannache
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  4. J. C. Abbe
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  5. Y. Andres
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  6. R. Naslain
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  7. R. Pailler
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  8. A. Nourredine
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Khouya, E., Fakhi, S., Hannache, H. et al. New adsorbents from oil shales: Preparation, characterization and U, Th isotope adsorption tests. Journal of Radioanalytical and Nuclear Chemistry 260, 159–166 (2004). https://doi.org/10.1023/B:JRNC.0000027075.26040.95

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  • DOI: https://doi.org/10.1023/B:JRNC.0000027075.26040.95

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