Skip to main content Accessibility help
×
Home
Hostname: page-component-5959bf8d4d-dtbwl Total loading time: 0.166 Render date: 2022-12-08T13:56:12.716Z Has data issue: true Feature Flags: { "useRatesEcommerce": false } hasContentIssue true

Na/Ca selectivity coefficients of montmorillonite in perchlorate solution at different temperatures

Published online by Cambridge University Press:  27 March 2012

Aku Itälä
Affiliation:
VTT Technical Research Centre of Finland, Otakaari 3 K, Espoo, FI-02044 VTT, Finland
Arto Muurinen
Affiliation:
VTT Technical Research Centre of Finland, Otakaari 3 K, Espoo, FI-02044 VTT, Finland
Get access

Abstract

The Finnish spent nuclear fuel disposal is based on the Swedish KBS-3 concept in crystalline bedrock. The concept aims at long-term isolation and containment of spent fuel in copper canisters surrounded by bentonite buffer which mostly consists of montmorillonite. For the long-term modelling of the chemical processes in the buffer, the cation-exchange selectivity coefficients have to be known at different temperatures. In this work, the cation-exchange selectivity coefficients and cation-exchange isotherms were determined in batch experiments for montmorillonite at three different temperatures (25 °C, 50 °C and 75 °C). Five different ratios of NaClO4/Ca(ClO4)2 were used in the experimental solutions. After equilibration the solution and montmorillonite were separated and the solution analysed to get the desired exchange parameters. The experiments were modelled with a computational model capable of taking into account the physicochemical processes that take place in the experiment.

Type
Articles
Copyright
Copyright © Materials Research Society 2012

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

REFERENCES

1. Pastina, B. and Hellä, P.. Expected evolution of a spent nuclear fuel repository at Olkiluoto. (Posiva Oy, Olkiluoto, Finland, 2006, Posiva Report 2006-05) p. 405.Google Scholar
2. Karnland, O., Olsson, S., Nilsson, U., Mineralogy and sealing properties of various bentonites and smectite-rich clay materials. (Swedish Nuclear Fuel and Waste Management Company, Stockholm, Sweden, 2006) p. 117.Google Scholar
3. TKS-2009. Nuclear Waste Management at Olkiluoto and Loviisa Power Plants. Review of Current Status and Future Plans for 2010-2012. (Posiva Oy, Finland, 2010) p. 563.Google Scholar
4. Tributh, H. and Lagaly, G.A., “Aufbereitung und Identifizierung von Boden- und Lagerstättentonen. I. Aufbereitung der Proben im Labor“. (GIT-Fachzeitzschrift für das Laboratorium 30, 1986) pp. 524–529.Google Scholar
5. Bergaya, F., Theng, B.K.G., Lagaly, G., Handbook of Clay Science. (Elsevier, Oxford, United Kingdom, 2006) p. 1125.Google Scholar
6. Hester, R.E. and Plane, R.A., Inorg. Chem. 3, 769770 (1964).10.1021/ic50015a037CrossRefGoogle Scholar
7. Maes, A., Peigneur, P., and Cremers, A., Proc. Int. Clay Conf. 1975, 319329.Google Scholar
8. Sposito, G., The thermodynamics of soil solution. (Oxford Univ. Press, Oxford, U.K., 1981) p. 223.Google Scholar
9. Sposito, G., Holtzclaw, K.M., Charlet, L., Jouany, C., and Page, A.L., Soil Sci. Soc. Am. J. 47, 5156 (1983).10.2136/sssaj1983.03615995004700010010xCrossRefGoogle Scholar
10. Meier, L., Kahr, G.. Clays and Clay Minerals, Vol. 47, No. 3, 368388, 1999.10.1346/CCMN.1999.0470315CrossRefGoogle Scholar
11. Donnan, F. G., Z. Elektrochemie 17, 572 (1911).Google Scholar
12. Appelo, C. A. J., Postma, D., Geochemistry, groundwater and pollution, 2 nd ed. (A.A. Balkema Publishers, Leiden, Netherlands, 2007) p. 649.Google Scholar
13. Davies, C.W., Ion association. (Butterworth & Co. (Publishers) Ltd. London, 1962) p. 190.Google Scholar
14. Robinson, R.A., Stokes, R.H., Electrolyte solution. The measurement and interpretation of concuctance, chemical potential and diffusion in solution of simple electrolytes , 2 nd ed. (London Butterworths Scientific Publications, 1959) p. 559.Google Scholar
15. Bradbury, M.H., Baeyens, B., Porewater chemistry in compacted re-saturated MX-80 bentonite: Physico-chemical characterisation and geochemical modelling . (PSI Berich Nr. 02-10, Villigen, 2002) p. 42.Google Scholar
16. Bruggenwert, M.G.M., Kamphorst, A., in Developments in Soil Science, edited by Bolt, G.H. (Elsevier Ltd, 1979, Vol. 5, Part B) pp. 141203.Google Scholar

Save article to Kindle

To save this article to your Kindle, first ensure coreplatform@cambridge.org is added to your Approved Personal Document E-mail List under your Personal Document Settings on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part of your Kindle email address below. Find out more about saving to your Kindle.

Note you can select to save to either the @free.kindle.com or @kindle.com variations. ‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi. ‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.

Find out more about the Kindle Personal Document Service.

Na/Ca selectivity coefficients of montmorillonite in perchlorate solution at different temperatures
Available formats
×

Save article to Dropbox

To save this article to your Dropbox account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Dropbox account. Find out more about saving content to Dropbox.

Na/Ca selectivity coefficients of montmorillonite in perchlorate solution at different temperatures
Available formats
×

Save article to Google Drive

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

Na/Ca selectivity coefficients of montmorillonite in perchlorate solution at different temperatures
Available formats
×
×

Reply to: Submit a response

Please enter your response.

Your details

Please enter a valid email address.

Conflicting interests

Do you have any conflicting interests? *