Russian Studies of the Safety of Anion Exchange in Nitric Acid

Abstract

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Radiation-induced decomposition of anion exchange resins

“…A variety of technical issues arise from the production of H 2 and/or O 2 in the radiolysis of resins because of the serious safety concerns related to their flammability and explosion potential [14][15][16]. Since most separation processes take place in aqueous environments, the radiolytic decomposition of water itself and possible interaction of reactive species produced in radiolysis of 0022-3115/$ -see front matter Ó 2010 Elsevier B.V. All rights reserved.…”

Separation of Americium From Aged Plutonium Dioxide

“…During this period of time, the resin was exposed to alpha radiation produced by the plutonium retained in the column. Radiationinduced chemical changes in anion exchange resins are characterized by darkening of the resin, the decreasing exchange capacity (primarily as a result of the loss of the amine group), the evolving odorous gas from amines, and the degrading resin matrix [21][22][23]. This was not observed in EXP #2 where the plutonium recovery step was performed immediately after the completion of the Am-Pu separation step.…”