Feed Adjustment Chemistry for Hanford 101-SY and 103-SY Tank Waste: Attempts to Oxidize the Non-Pertechnetate Species.

Autor: Schroeder, N.C., Radzinski, S.D., Ashley, K.R., Truong, A.P., Whitener, G.D.
Zdroj: Journal of Radioanalytical & Nuclear Chemistry; Nov2001, Vol. 250 Issue 2, p271-284, 14p
Abstrakt: More than 50% of the technetium in Hanford 101-SY and 103-SY tank waste is not pertechnetate (TcO4 −). These non-pertechnetate species (TcN) are stable, soluble, reduced complexes of technetium. In order to remediate these waste, it will be necessary to oxidize these species to TcO4 −. For radioanalytical purposes, oxidation requires digestion in Ce(IV)/16M HNO3. Many oxidants are ineffective. Sodium peroxydisulfate, sodium peroxydisulfate/silver(I), and ozone oxidize all of the technetium species to pertechnetate. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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