Size dispersion and colloid mediated radionuclide transport in a synthetic porous media

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Autoren

  • A. Delos
  • Clemens Walther
  • T. Schäfer
  • Stefanie Büchner

Externe Organisationen

  • Amphos XXI Consulting S.L.
  • Karlsruher Institut für Technologie (KIT)
Forschungs-netzwerk anzeigen

Details

OriginalspracheEnglisch
Seiten (von - bis)212-215
Seitenumfang4
FachzeitschriftJournal of Colloid and Interface Science
Jahrgang324
Ausgabenummer1-2
PublikationsstatusVeröffentlicht - 16 Mai 2008
Extern publiziertJa

Abstract

Size dispersion effects during the migration of natural submicron bentonite colloids (<200 nm) through a ceramic column are observed for the first time by laser-induced breakdown detection (LIBD) at ppm (parts per million) mass concentration. Larger size fractions (∼200 nm) arrive prior to smaller size fractions (<100 nm) at the column outlet in agreement with model predictions and earlier findings with carboxylated polystyrene spheres. By addition of trace amounts of americium(III) and plutonium(IV), colloid mediated transport of these radionuclides is studied. The peak arrival times of Pu-244 and Am-241, as measured by ICP-MS, match the bentonite colloid breakthrough and occur significantly prior to the conservative tracer (HTO) indicating the colloid-borne migration of tri- and tetravalent radionuclides.

ASJC Scopus Sachgebiete

Zitieren

Size dispersion and colloid mediated radionuclide transport in a synthetic porous media. / Delos, A.; Walther, Clemens; Schäfer, T. et al.
in: Journal of Colloid and Interface Science, Jahrgang 324, Nr. 1-2, 16.05.2008, S. 212-215.

Publikation: Beitrag in Fachzeitschrift › Artikel › Forschung › Peer-Review

Delos A, Walther C, Schäfer T, Büchner S. Size dispersion and colloid mediated radionuclide transport in a synthetic porous media. Journal of Colloid and Interface Science. 2008 Mai 16;324(1-2):212-215. doi: 10.1016/j.jcis.2008.05.017
Delos, A. ; Walther, Clemens ; Schäfer, T. et al. / Size dispersion and colloid mediated radionuclide transport in a synthetic porous media. in: Journal of Colloid and Interface Science. 2008 ; Jahrgang 324, Nr. 1-2. S. 212-215.
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abstract = "Size dispersion effects during the migration of natural submicron bentonite colloids (<200 nm) through a ceramic column are observed for the first time by laser-induced breakdown detection (LIBD) at ppm (parts per million) mass concentration. Larger size fractions (∼200 nm) arrive prior to smaller size fractions (<100 nm) at the column outlet in agreement with model predictions and earlier findings with carboxylated polystyrene spheres. By addition of trace amounts of americium(III) and plutonium(IV), colloid mediated transport of these radionuclides is studied. The peak arrival times of Pu-244 and Am-241, as measured by ICP-MS, match the bentonite colloid breakthrough and occur significantly prior to the conservative tracer (HTO) indicating the colloid-borne migration of tri- and tetravalent radionuclides.",
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Download

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AU - Walther, Clemens

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AU - Büchner, Stefanie

N1 - Funding information: The authors thank H. Geckeis for valuable discussions and F. Geyer and C. Walschburger for the ICP-MS analysis. The results presented were partly supported by Network of Excellence (NoE) ACTINET (project 01-01) and the Integrated Project (IP) FUNMIG under the contract number FP6-516514. The results presented in the present article were collected during the Ph.D. thesis of Anne Delos granted by Andra (French National Agency for Nuclear Waste Disposal).

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