NDLI: Decontamination of liquid radioactive waste concentrates from $^{60}$Co using diethyldithiocarbamates

Content Provider	Springer Nature Link
Author	Cheremiskin, V. I. Shmakov, L. V. Pereguda, V. I. Tishkov, V. M. Chernikin, A. V. Cheremiskin, S. V. Chaliyan, A. G. volodskii, V. A.
Copyright Year	2012
Abstract	Oxidized bottom residue (BR) from installations for reprocessing trap waters of the Leningrad NPP were treated to remove $^{60}$Co by coprecipitation with transition metal diethyldithiocarbamates (DDTC). Coprecipitation of $^{60}$Co with manganese and cobalt diethyldithiocarbamates was examined in relation to pH of solution, temperature, amount of diethyldithiocarbamates, reagent ratio, and number of coprecipitation steps. The effect of diethyldithiocarbamates on the efficiency and conditions of the solution decontamination from $^{134,137}$Cs on nickel potassium ferrocyanides was studied. Oxidative treatment of liquid radioactive waste concentrates to break down organic complexes is a necessary condition for $^{60}$Co removal by coprecipitation with transition metal diethyldithiocarbamates. From a solution initially containing 56 kBq dm$^{−3}$ $^{60}$Co, $^{60}$Co can be removed to a residual content of 0.12–0.16 kBq dm$^{−3}$ by two-step coprecipitation with Co(DDTC)$_{2}$. The coprecipitation with Co(DDTC)$_{2}$ does not affect the efficiency of the subsequent removal of Cs radionuclides on nickel potassium ferrocyanides.
Starting Page	168
Ending Page	173
Page Count	6
File Format	PDF
ISSN	10663622
Journal	Radiochemistry
Volume Number	54
Issue Number	2
e-ISSN	16083288
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2012-04-04
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	low-waste technology diethyldithiocarbamates liquid radioactive wastes nuclear power engineering Nuclear Chemistry Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry

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