Skip to main content Accessibility help
×
Home

Equilibrium Concept for the Assessment of the Actinide Release from Waste Forms into Salt Brines

  • G. Rudolph (a1), P. Vejmelka (a1) and R. Köster (a1)

Abstract

A novel approach for the assessment of the radionuclide release from a nuclear waste repository after an accidental water ingression is proposed: after a short time a stable final condition is assumed to be established in the near-field of the waste form in which each radionuclide is at equilibrium between the dissolved phase and the various solid phases. The total release may be assessed from the concentration in solution and the flow rate out of the near-field.

An experimental program stimulated by this concept includes studies on the solubility of actinide compounds in salt brines in equilibrium with cement. In Q-brine (a salt brine rich in magnesium chloride, pH = 6.5) the concentrations of U, Np, Pu and Am in solution are determined by a sorption equilibrium, in sodium chloride brine (pH = 12–13) by the solubility of the respective hydroxide.

Copyright

References

Hide All
1. Godbee, H.W., Compere, E.L., Joy, D.S., Kibbey, A.H., Moore, J.G., Nestor, C.W. Jr, Anders, O.U., Neilson, R.M. Jr, Nucl. Chem. Waste Management 1, 29 (1980).
2. Hodgkinson, D.P. et al., AERE-R-12331 (1987).
3. Rai, D., Ryan, J.L., Scientific Basis for Nuclear Waste Management 7, 805 (1984).

Equilibrium Concept for the Assessment of the Actinide Release from Waste Forms into Salt Brines

  • G. Rudolph (a1), P. Vejmelka (a1) and R. Köster (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed