NDLI: Radiation resistance of a composite ferrocyanide-silica gel sorbent

Content Provider	Springer Nature Link
Author	Bykov, G. L. Milyutin, V. V. Ershov, B. G. Korchagin, Yu. P. Gelis, V. M. Bessov, A. A.
Copyright Year	2011
Abstract	The radiolytic behavior of FNS composite ferrocyanide sorbent based on potassium nickel ferrocyanide and silica gel was studied. γ-Irradiation of the sorbent results in formation of hydrogen due to radiolytic decomposition of water in the solid phase. The hydrogen yield (molecules/100 eV) is 0.02 for the dry sorbent and 0.07 for the wet sorbent. The amount of hydrogen formed in the course of storage of the sorbent saturated with $^{137}$Cs was calculated. On irradiation of the dry sorbent in the potassium form to a dose of 4 MGy, the $^{137}$Cs distribution coefficient K $_{d}$ decreases by a factor of 2.5. However, K $_{d}$ of $^{137}$Cs on irradiated sorbents remains sufficiently high (>10$^{4}$), i.e., the FNS ferrocyanide sorbent shows high functional resistance to radiation. γ-Irradiation of dry and wet samples of the ferrocyanide sorbent to a dose of 4 MGy does not lead to oxidation of Fe(II) to Fe(III) in [Fe(CN)$_{6}$] groups. Thus, FNS ferrocyanide sorbent is a radiation-resistant material suitable for recovery of cesium radionuclides from liquid radioactive wastes and the subsequent long-term and safe storage.
Starting Page	191
Ending Page	195
Page Count	5
File Format	PDF
ISSN	10663622
Journal	Radiochemistry
Volume Number	53
Issue Number	2
e-ISSN	16083288
Language	English
Publisher	SP MAIK Nauka/Interperiodica
Publisher Date	2011-05-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	ferrocyanide sorbents radiation resistance radiocesium recovery Nuclear Chemistry Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry

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