Details
| Original language | English |
|---|---|
| Pages (from-to) | 212-215 |
| Number of pages | 4 |
| Journal | Journal of Colloid and Interface Science |
| Volume | 324 |
| Issue number | 1-2 |
| Publication status | Published - 16 May 2008 |
| Externally published | Yes |
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.
Keywords
- Colloid, LIBD, Particle size distribution, Size dispersion, Trace analysis
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Materials Science(all)
- Biomaterials
- Materials Science(all)
- Surfaces, Coatings and Films
- Chemical Engineering(all)
- Colloid and Surface Chemistry
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In: Journal of Colloid and Interface Science, Vol. 324, No. 1-2, 16.05.2008, p. 212-215.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Size dispersion and colloid mediated radionuclide transport in a synthetic porous media
AU - Delos, A.
AU - Walther, Clemens
AU - Schäfer, T.
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).
PY - 2008/5/16
Y1 - 2008/5/16
N2 - 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.
AB - 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.
KW - Colloid
KW - LIBD
KW - Particle size distribution
KW - Size dispersion
KW - Trace analysis
UR - http://www.scopus.com/inward/record.url?scp=49949152110&partnerID=8YFLogxK
U2 - 10.1016/j.jcis.2008.05.017
DO - 10.1016/j.jcis.2008.05.017
M3 - Article
C2 - 18514680
AN - SCOPUS:49949152110
VL - 324
SP - 212
EP - 215
JO - Journal of Colloid and Interface Science
JF - Journal of Colloid and Interface Science
SN - 0021-9797
IS - 1-2
ER -