Abstract
The dissolution of UO2 in carbonate-bicarbonate solutions containing sodium hypochlorite as an oxidant has been investigated. The effect of temperature, sodium hypochlorite concentration and stirring speed was examined. In the temperature range of 303 to 318 K, the leaching reaction displayed linear kinetics. Apparent activation energy obtained from the differential approach was found to be 57 kJ mol−1. This relatively high activation energy value indicates a chemically controlled behavior of UO2 dissolution. The order of reaction with respect to sodium hypochlorite concentration was found to be unity.
Article PDF
Similar content being viewed by others
Avoid common mistakes on your manuscript.
References
T. L. Mackay, M. E. Wadsworth,Trans. Met. Soc. AIME, 212 (1958) 597.
J. Celeda, J. G. Lara,J. Inorg. Nucl. Chem., 27 (1965) 2561.
F. Habasi, G. Thurston,Energia Nucleare (Milan), 14 (1967) 238.
P. A. Laxen, Research in Chemical and Extractive Metallurgy, J. T. Woodcock, A. E. Jenkins, G. M. Willis (Eds.), Austr. Inst. Min. Met., Melbourne (1967) 181.
M. J. Nicol, C. R. S. Needes, P. Finkelstein,Inst. Min. Met. London, 1 (1975).
C. A. Eligwe, A. E. Torma, F. W. De Vries,Hydrometallurgy, 9 (1982) 83.
W. E. Schortmann, M. A. DeSesa, Proceedings of the 2nd International Conference on the Peaceful Uses of Atomic Energy, 3 (1958) 333.
E. A. Kenevskii, I. V. Goncharov, V. B. Rengevich,Sov. Radiochem., 7 (1965) 577.
D. E. Grandstaff,Econ. Geol., 71 (1976) 1493.
M. J. Nicol, C. R. S. Needes, N. P. Finkelstein, Rep. Natn. Inst. Metall. PIN 171, 37, Oct. (1973).
M. J. Nicol, C. R. S. Needes, N. P. Finkelstein, Rep. Natn. Inst. Metall. PIN 165, 60, Sept. (1973).
M. J. Nicol, C. R. S. Needes,Electrochim. Acta, 22 (1977) 1381.
M. A. DeSesa, P. J. Magno, H. E. Gardener, E. Dickermane, Proceeding of the 2nd U.N. International Conference on the Peaceful Uses of Atomic Energy, 3 (1958) 342.
I. H. Warren, D. M. Moursey,Hydrometallurgy, 10 (1983) 343.
O. A. Nietzel, M. A. DeSesa,Anal Chem., 29 (1957) 756.
K. J. Laidler, Chemical Kinetics, 2nd Ed., McGraw-Hill Book Co., New York, N. Y. (1965) p. 15.
H. S. Ray, Application of Kinetics and Thermal Analysis in the Extractive Metallurgy of Base Metals, Lecture delivered during the workshop on extractive metallurgy of base metals, Hindustan Zinc Ltd., 7–9 Feb. (1958).
N. R. Drapper, H. Smith, Applied Repression Analysis, John Wiley and Sons Inc., New York, (1968) p. 407.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Sharma, J.N., Bhattacharya, K., Swami, R.G. et al. Studies on the kinetics of UO2 dissolution in carbonate-bicarbonate medium using sodium hypochlorite as oxidant. Journal of Radioanalytical and Nuclear Chemistry Letters 214, 223–233 (1996). https://doi.org/10.1007/BF02163251
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02163251