Russian studies of the safety of anion exchange in nitric acid

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Synthetic ion exchange resins came into use in the Soviet Union in the 1950`s, and domestic anion exchange resins based on quaternary amine groups have long been used in the Russian nuclear industry. These resins are similar to resins used in the West, and include pyridine-based resins, as well as the more conventional aryl polymers with substituted methyl amines. (Slide 1) The sensitivity of these amines to reaction with nitric acid and other oxidants has been a concern in Russia as in the West, and numerous laboratory studies have been conducted on the reactions involved. Several incidents involving pressure or ... continued below

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16 p.

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Hyder, M. L.; Bartenev, S. A. & Lazarev, L. N. July 1, 1997.

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Description

Synthetic ion exchange resins came into use in the Soviet Union in the 1950`s, and domestic anion exchange resins based on quaternary amine groups have long been used in the Russian nuclear industry. These resins are similar to resins used in the West, and include pyridine-based resins, as well as the more conventional aryl polymers with substituted methyl amines. (Slide 1) The sensitivity of these amines to reaction with nitric acid and other oxidants has been a concern in Russia as in the West, and numerous laboratory studies have been conducted on the reactions involved. Several incidents involving pressure or temperature excursions have provided incentives for such studies. (Slide 2) This report briefly summarizes this work. A report by the Russian authors of this paper providing greater detail is to be issued as a U.S. Dept. of Energy document. Additionally, a second report by these authors, describing new studies on anion exchange resin safety, will also be issued as a DOE report. The separation of plutonium, neptunium, etc. from other materials by ion exchange requires rather strong nitric acid (6-8 M). In some systems, such as the processing of {sup 238}Pu, intense ionizing radiation may also be present during ion exchange separation. As a result, it is necessary to consider not only thermal hydrolysis and oxidation and their effects on the resin, but also radiolysis. All of these were investigated in the Russian studies.

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16 p.

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OSTI as DE97060188

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  • 21. annual actinide separations conference, Charleston, SC (United States), 23-26 Jun 1997

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  • Other: DE97060188
  • Report No.: WSRC-MS--97-0180
  • Report No.: CONF-9706124--1
  • Grant Number: AC09-96SR18500
  • Office of Scientific & Technical Information Report Number: 501563
  • Archival Resource Key: ark:/67531/metadc691730

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  • July 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • May 16, 2016, 11:35 a.m.

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Hyder, M. L.; Bartenev, S. A. & Lazarev, L. N. Russian studies of the safety of anion exchange in nitric acid, article, July 1, 1997; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc691730/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.