Hostname: page-component-745bb68f8f-s22k5 Total loading time: 0 Render date: 2025-01-15T06:46:19.721Z Has data issue: false hasContentIssue false
  • English
  • Français

Immobilization and Leakage of Krypton Encapsulated in Zeolite or Glass

Published online by Cambridge University Press:  15 February 2011

A. B. Christensen ,
J. A. Del Debbio ,
D. A. Knecht  and
J. E. Tanner
A. B. Christensen
Affiliation:
Exxon Nuclear Idaho Company, Idaho Falls, Idaho, USA
J. A. Del Debbio
Affiliation:
Exxon Nuclear Idaho Company, Idaho Falls, Idaho, USA
D. A. Knecht
Affiliation:
Exxon Nuclear Idaho Company, Idaho Falls, Idaho, USA
J. E. Tanner
Affiliation:
Exxon Nuclear Idaho Company, Idaho Falls, Idaho, USA
Get access

Abstract

Krypton and other gases are readily adsorbed in zeolite 5A molecular sieve or porous Vycor “thirsty glass” and may be trapped there by sintering 2–4 hours at 700° or 900°C, respectively. Encapsulation in these materials is the basis of a method to “immobilize” krypton-85 for storage. Amounts of gas trapped are approximately proportional to gas density, and are about 50 and 40 cc(standard conditions = STP)/cc of solid at 1000 atm, for zeolite 5A and glass, respectively. Based on tests of a few months duration a leakage of 0.3% of the krypton is predicted for 10 years at 400°C for either material.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 6: Symposium D – Scientific Basis for Nuclear Waste Management IV , 1981 , 525
Copyright
Copyright © Materials Research Society 1982

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. Federal Register 42, No. 9, Title 40, Part 190 (January 13, 1977).Google Scholar
2. Benedict, R.W., Christensen, A.B., Del Debbio, J.A., Keller, J.H. and Knecht, D.A., “Technical and Economic Feasibility of Zeolite Encapsulation for Krypton–85 Storage,” ENICO–1011 (September 1979).Google Scholar
3. Breck, D. W., J.Chem. Ed. 41, 678 (1964).Google Scholar
4. Penzhorn, R. D., Schuster, P., Noppel, H. E. and Helwig, L. M., “Long- Term Storage of Krypton-85 Zeolite” in Proceedings Int. Symp. Management of Gaseous Wastes from Nuclear Facilities, IAEA-SM–245, Vienna (February 1980).Google Scholar
5. Penzhorn, R. D., “Long-Term Storage of Kr–85 in Zeolite 5A,” in Proceedings of the 16th DOE Nuclear Air Cleaning Conference, CONF–801038, NTIS, pp. 1034–1046.Google Scholar
6. Tingey, G. L., Lytle, J. M., Gray, W. J. and Wheeler, K. R., “Solid State Storage of Radioactive Krypton in a Silica Matrix,” PNL–3617 (December 1980).Google Scholar
7. Breck, D. W., Zeolite Molecular Sieves, (John Wiley, 1974), p 84 and 428.Google Scholar
8. Crank, J., The Mathematics of Diffusion, 2nd ed., (Clarendon Press, Oxford 1975), Figures 5.10 p. 83 and 6.7 p. 99.Google Scholar