Abstract
Different approaches for measuring the interaction between radionuclides and rock matrix are needed to test the compatibility of transport models and retardation experiments. In this work sorption of cesium (134Cs) was studied on unaltered mica gneiss, and on unaltered, moderately altered and strongly altered tonalite. The crushed rock samples were sieved into seven fractions from 0. 1 mm to 3.15 mm. The mass distribution ratio values for each fraction was determined using the static batch method. Cesium sorption onto different minerals was demonstrated using digital image analysis in order to interpret thin section autoradiographs. The autoradiographic method based on irradiation-induced luminescence properties in feldspars was applied in order to estimate the alteration of tonalites.
Cesium sorption on moderately altered and strongly altered tonalite was stronger than on unaltered rocks owing to larger specific surface areas and the composition of alteration minerals. Strongest sorption was found on biotite. Mass distribution ratio, Rd, values of 0.3–1.1 m3·kg−1 for unaltered rocks and 0.9–3.4 m3·kg−1 for altered rocks were determined. Moderate dependence on surface area was found for mica gneiss after I and 3 days sorption time. For strongly altered tonalite only slight dependence on surface area was found. Research-articled -values increased as a function of sorption time due to diffusion into the particles. Higher increase in values for larger diameter particles indicated the availability of internal specific surface areas.
Similar content being viewed by others
References
R. S. Rundberg, in Radionuclide sorption from the safetyt evaluation Perspective, Proceedings of an NEA Workshop, OECD 1992.
R. J. Serne in Radionuclide sorptionfJorni the 11ya fet valuation perspective, Proceedings of in NEA Workshop, OECD 1992
D. Langmuir, in Scieitific Basis for Nuclear Waste Management XX, edited by W. Gray and I. Triay (Mater. Res. Soc, Proc, 465, Pittsburgh, Pa, 1997) pp. 769–780.
P. Hölttä. M. Siitari-Kauppi, M. Hakanen, T. Huitti, A. Hautojärvi. A. Lindheg, J. Contain. Hydrol. 26, 135 (1997).
P. Hölttä, M. Siitari-Kauppi, P. Huikurii A. Lindbcrg, A. Hautojärvi, in Scietific Basis for Nuclear tWaste Management XX, edited by W. Gray and I. Triay (Mater. Res. Soc. Proc. 465, Pittsburgh, Pa, 1997) pp. 789–796.
P. Hölttä M. Siitari-Kauppi, A. Lindberg, A. Hautojärvi, Radiochim. Acta xx, 000 (1998).
M. Siitari-Kauppi, S. Pinnioja, A. Lindberg, in Water-Rock Interaction, edited by G. B. Arehart and J. R. Hulston (Balkema, Rotterdam, 1998) pp. 859–862
A. Lindberg and M. Paananen, Teollisuuden Voima Oy, Site Investigations Woik Report 92-34, Helsinki, 1992 (in Finnish).
B. Allard and J. Beall, J. Environm. Sci. Health 6, 507 (1979).
K.-H. Hellmuth, M. Siitari-Kauppi, A. Lindberg, J. Contain Hydrol. 13, 403 (1993)
D. Awvir, P. Farim, J Pfeifer, Colloid and Inmterface Science 103, No 1, 112 (1985).
M. Hakanen. P. Hölttä Nuclear Waste Comnnission of Finnish Power Companies, Report YJT-92-14, Helsinki, 1992.
S. Pinnioja, T. Jaakkola, E-L. Kämäräinen, A. Koskinen, A. Lindberg, Nuclear Waste Commission of Finnish Power Companies, Report YJT-84-19, Helsinki, 1984.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Siitari-Kauppi, M., Hölttä, P., Pinnioja, S. et al. Cesium Sorption on Tonalite and Mica Gneiss. MRS Online Proceedings Library 556, 1099 (1998). https://doi.org/10.1557/PROC-556-1099
Published:
DOI: https://doi.org/10.1557/PROC-556-1099