Abstract
Dissolution of uranium dioxide pellets /10 mmø×11 mm/ in nitric acid was studied. A dependence of the initial dissolution rate on acid concentration and temperature was observed. The effective surface area of the pellet was measured during the dissolution process, and compared with its apparent surface area. The experimental dissolution curve was in good agreement with the curve obtained by simulations assuming that the dissolution rate depends on the effective surface area.
Similar content being viewed by others
References
M. Benedict, T. H. Pigford, H. W. Levi, Nuclear Chemical Engineering, 2nd ed., McGraw-Hill, Inc., New York, 1981.
B. C. Finney, B. A. Hannaford, G. A. West, C. D. Watson, Shear-Leach Process, ORNL-3984, 1969.
A. L. Urialte, R. H. Rainey, Dissolution of High-Density UO2, PuO2 and UO2−PuO2 pellets in Inorganic Acids, ORNL-3695, 1965.
S. Araya et al., Concept of Reprocessing Facility, PNC ZN 141, 1984.
L. M. Ferris, A. H. Kibbey, Sulfex-Thorex and Dares-Thorex Processes for the Dissolution of Consolidated Edison Reactor Fuel, ORNL-2934, 1960.
J. K. Davidson et al., The Fast Oxide Breeder, KAPL-1757, 1959.
M. Shabbir, R. G. Robbins,J. Appl. Chem., 18 /1968/ 129.
R. F. Taylor et al.,J. Appl. Chem., 13, /1963/ 32.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Fukasawa, T., Ozawa, Y. Relationship between dissolution rate of uranium dioxide pellets in nitric acid solutions and their porosity. Journal of Radioanalytical and Nuclear Chemistry Letters 106, 345–356 (1986). https://doi.org/10.1007/BF02163667
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02163667