Tc(VII) Sorption by Fibrous Sorbents
Authors: Medvedeva, I.B.; Kuznetsova, N.A.; Rovnyi, S.I.
Source: Atomic Energy, Volume 94, Number 5, May 2003 , pp. 318-324(7)
It is shown that technetium can be extracted from acidic media by the fibrous complexing sorbent POLIORGS 35, containing hydrazidine groups, and from neutral and nitric-acid solutions with a complex salt composition (with nitrate-ion concentration not exceeding 10 g/liter) by strongly basic anionite POLIORGS AV-17 with quaternary ammonium bases. The effect of the pH of the solutions on the sorption of technetium is studied. It is shown that the sorption depends on the nature and concentration of the salt background of the solutions. The kinetics and mechanism of sorption of technetium by fibrous sorbents and the possibility of their desorption and reuse in sorption–desorption cycles are investigated. It is shown that the fibrous sorbents POLIORGS 35 and POLIORGDS AV-17 are promising for extracting technetium from waters with a high mineral content (up to 20 g/liter).
Document Type: Research Article
Affiliations: Federal State Unitary Enterprise Industrial Association Mayak
Publication date: May 1, 2003