Download Chemical Pretreatment of Nuclear Waste for Disposal by Jimmy T. Bell, Luci H. Bell (auth.), Wallace W. Schulz, E. PDF

By Jimmy T. Bell, Luci H. Bell (auth.), Wallace W. Schulz, E. Philip Horwitz (eds.)

Chemical pretreatment of nuclear wastes refers back to the series of separations approaches used to partition such wastes right into a small quantity of high-level waste for deep geologic disposal and a bigger quantity of low-level waste for disposal in a near-surface facility. Pretreatment of nuclear wastes now kept at numerous U. S. division of strength websites levels from basic solid-liquid separations to extra complicated chemical steps, equivalent to dissolution of sludges and elimination of chosen radionuclides, e. g. , 90Sr, 99Tc, 137CS, and TRU (transuranium) parts. the driver for improvement of chemical pretreatment strategies for nuclear wastes is the commercial benefit of waste minimization as mirrored in reduce charges for near-surface disposal in comparison to the excessive rate of casting off wastes in a deep geologic repository. This latter topic is expertly and authoritatively mentioned within the introductory paper via J. and L. Bell. Seven papers during this quantity describe numerous separations methods built or being constructed to pretreat the massive quantity of nuclear wastes saved on the US DOE Hanford and Savannah River websites. those papers contain descriptions of the kind and quantity of vital nuclear wastes kept on the Hanford and Savannah River websites in addition to almost immediately estimated options for his or her remedy and ultimate disposal. A paper by means of Strachan et al. discusses chemical and radiolytic mechanisms for the formation and unlock of doubtless explosive hydrogen fuel in Tank 241-SY-101 on the Hanford site.

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And M. M. Beary, 1981, Ozone Mass Transfer and Kinetics, RHO-C-47, Rockwell Hanford Operations, Richland, Washington. Boomer, K. , 1993, Tank Waste Technical Options Report, WHC-EP-0616 Westinghouse Hanford Company, Richland, Washington. Colby, S. , 1993, Three Candidate Treatment Technologies for Remediation of Hanford Site Watch List Tanks, WHC-SA-1825-FP, Westinghouse Hanford Company, Richland, Washington. , C. Musikas, and L. Nigond, 1993, Sep. Sci. , 28:1 DOE, 1987, Final Environmental Impact Statement.

This waste was precipitated during neutralization of solutions from Zircaloy cladding removal. Acidified SST sludge waste is highly variable in composition (Schulz, 1980). Sodium, iron, aluminum, and chromium are the major components of this waste. The major radioelements are strontium, americium, plutonium, europium, cesium, and uranium. On a mole basis, uranium is by far the most abundant radioelement. Synthetic waste solutions containing major components of the waste were prepared for use in the extraction chromatographic experiments using reagent grade chemicals and distilled water.

S. Environmental Protection Agency, and U. S. C. ERDA, 1977, Alternatives for Long-Term Management of Defense High-Level Radioactive Waste, ERDA-77-44, U. S. Energy Research and Development Administration, Richland, Washington. Grygeil, M. , 1991, Tank Waste Disposal Program Redefinition, WHC-EP-0475 Westinghouse Hanford Company, Richland, Washington. Horwitz, E. P. and W. W. , Chichester, England, p. 137. Horwitz, E. , M. L. Dietz, and D. E. Fisher, 1990, Solvent Extr. Ion. , 8:199 Kupfer, M. , A.

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