Abstract
The United States Department of Energy Hanford site defense complex has the largest volume of stored nuclear waste in the US. The complex has been in existence for nearly fifty years, and the varied chemical operations over this time period have generated a wide variety of wastes. The aqueous wastes, both high-level and TRU (transuranic), are stored in underground single-shell and double-shell tanks. Because the aqueous wastes are made alkaline (pH ∼14) to prevent corrosion of the carbon steel liners of the tanks, the uranium, TRUs and 90Sr, together with most of the fission products, are largely concentrated in the insoluble sludge formed by the hydroxides, phosphates, and silicates of metal ions such as aluminum, iron, zirconium, and bismuth. Fission products cesium and technetium are largely concentrated in the supernatant solution.
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References
Chiarizia, R. and Horwitz, E. P., 1987, The influence of TBP on Am extraction by CMPO, Inorg. Chim. Acta, 140: 261.
Gatrone, R. C., Kaplan,. L., and Horwitz, E. P., 1987, The synthesis and purification of the carbamoyl-methylphosphine oxides, Solvent Extr. Ion Exch., 5: 1075.
Horwitz, E. P., Kalina, D. G., Kaplan, L., Mason, G. W., and Diamond, H., 1982, Selected alkyl (phenyl)-N, N-dialkylcarbamoylmethylphosphine oxides as extractants for Am(III) from nitric acid media, Separation Sci. Tech., 17: 1261.
Horwitz, E. P. and Schulz, W. W., 1991, The TRUEX Process: A Vital Tool for Disposal of U. S. Defense Nuclear Waste, in “New Separation Chemistry Techniques for Radioactive Waste and Other Specific Applications,” L. Cecille, M. Casarci and L. Pietrelli, eds., Elsevier Applied Science, London.
Horwitz, E. P., Dietz, M. L., and Fisher, D. E., 1991, SREX: A new process for the extraction and recovery of Sr from acidic nuclear waste streams, Solvent Extr. Ion Exch., 9: 1.
Horwitz, E. P., 1992, Combining Extractant Systems for the Simultaneous Extraction of Transuranic Elements and Selected Fission Products, in “Proceedings of the First Hanford Separation Science Workshop, Richland,” Washington, July 23-25, 1991, PNL-SA-21775, May 1993, p. 11.29.
Kolarik, Z. and Horwitz, E. P., 1988, Extraction of metal nitrates with octyl(phenyl)-N,N-diisobutylcar-bamoylmethylphosphine oxide in alkaline diluents at high solvent loading, Solvent Extr. Ion Exch., 6: 61.
Leonard, R. A., Bernstein, G. W., Pelto, R. H., and Ziegler, A. A., 1982, Liquid-liquid dispersion in turbulent couette flow, AIChE Journal 27: 495.
Vandegrift, G. F., 1992, Chapter II, Separation Science and Technology, in “Nuclear Technology Programs, Semiannual Progress Report,” U. S. DOE Report ANL-91/42, 1992, 54, October 1989-March 1990, Argonne National Laboratory, Argonne, Illinois.
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Horwitz, E.P., Dietz, M.L., Diamond, H., Rogers, R.D., Leonard, R.A. (1995). Combined TRUEX-SREX Extraction/Recovery Process. In: Schulz, W.W., Horwitz, E.P. (eds) Chemical Pretreatment of Nuclear Waste for Disposal. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-2526-4_7
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DOI: https://doi.org/10.1007/978-1-4615-2526-4_7
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