Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-28T16:31:08.250Z Has data issue: false hasContentIssue false
  • English
  • Français

Stability of Cs-Ionsiv in Portland cement blends for radioactive waste disposal

Published online by Cambridge University Press:  01 February 2011

Neil Christian Hyatt ,
Andreas Jenni  and
Martin Christopher Stennett
Neil Christian Hyatt
Affiliation:
n.c.hyatt@shef.ac.uk, The University of Sheffield, Engineering Materials, Mappin Street, Sheffield, Sheffield, South Yorkshire, S1 3JD, United Kingdom, +44 (0)114 2225504, +44 (0)114 2225943
Andreas Jenni
Affiliation:
andreas.jenni@geo.unibe.ch, University of Bern, Institute of Geological Sciences, Bern, Switzerland
Martin Christopher Stennett
Affiliation:
m.c.stennett@shef.ac.uk, The University of Sheffield, Engineering Materials, Mappin Street, Sheffield, Sheffield, South Yorkshire, S1 3JD, United Kingdom, +44 (0)114 2225504, +44 (0)114 2225943
Get access

Abstract

The suitability of Portland cement blends for encapsulation of Cs-Ionsiv in a monolithic wasteform was investigated. No evidence of reaction or dissolution of the Cs-Ionsiv in the cementitious environment was found by scanning electron microscopy and X-ray diffraction. However, a small fraction (≤1.6 wt%) of the Cs inventory was released from the encapsulated Ionsiv during leaching experiments carried out on hydrated samples. Cs release was enhanced by exchange of K and Na present in the cementitious pore water. Cement systems lower in K and Na, such as slag based blends, showed lower Cs release than the fly ash based analogues.

Keywords

ceramicion-exchange materialnuclear materials
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1265: Symposium AA – Scientific Basis for Nuclear Waste Management XXXIV , 2010 , 1265-AA06-06
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Zheng, Z., Philip, C.V., Anthony, R.G., Krumhansl, J.L., Trudell, D.E., and Miller, J.E., Ind. and Eng. Chem. Res., 35, 4246 (1996).Google Scholar
2 Walker, D.D., “Cesium Sorption/Desorption Experiments with IONSIV® IE-911 in Radioactive Waste”, U.S. Department of Commerce, National Technical Information Service, 5285 Port Royal Road, Springfield, VA 22161, USA, 2001.Google Scholar
3 Poojary, M.M., Bortun, A.I., Bortun, L.N., and Clearfield, A., Inorg. Chem., 35, 6131 (1996).Google Scholar
4 Celestian, A.J., Medvedev, D.G., Tripathi, A., Parise, J.B., and Clearfield, A., Nucl. Inst. Meth. in Phys. Res. B., 238, 61 (2005).Google Scholar
5 Gordon, L.E., Milestone, N.B., and Angus, M.J., Mat. Res. Symp. Proc., 1107, 135 (2008).Google Scholar
6 Bagosi, S. and Csetenyi, L.J., Cem. Conc. Res., 29, 479 (1999).Google Scholar
7 Hill, J. and Sharp, J.H., Cem. Conc. Comp., 24, 191 (2002).Google Scholar
8 Poojary, D.M., Cahill, R.A., and Clearfield, A., Chem. Mater., 6, 2364 (1994)Google Scholar
9 Batchelor, B., Waste Man., 26, 689 (2006).Google Scholar