Nitrate Anion Exchange in Pu-238 Aqueous Scrap Recovery Operations

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Strong base, nitrate anion exchange (IX) is crucial to the purification of {sup 238}Pu solution feedstocks with gross levels of impurities. This paper discusses the work involved in bench scale experiments to optimize the nitrate anion exchange process. In particular, results are presented of experiments conducted to (a) demonstrate that high levels of impurities can be separated from {sup 238}Pu solutions via nitrate anion exchange and, (b) work out chemical pretreatment methodology to adjust and maintain {sup 238}Pu in the IV oxidation state to optimize the Pu(IV)-hexanitrato anionic complex sorption to Reillex-HPQ resin. Additional experiments performed to determine the best ... continued below

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Pansoy-Hjelvik, M.E.; Silver, G.L.; Reimus, M.A.H. & Ramsey, K.B. January 31, 1999.

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Strong base, nitrate anion exchange (IX) is crucial to the purification of {sup 238}Pu solution feedstocks with gross levels of impurities. This paper discusses the work involved in bench scale experiments to optimize the nitrate anion exchange process. In particular, results are presented of experiments conducted to (a) demonstrate that high levels of impurities can be separated from {sup 238}Pu solutions via nitrate anion exchange and, (b) work out chemical pretreatment methodology to adjust and maintain {sup 238}Pu in the IV oxidation state to optimize the Pu(IV)-hexanitrato anionic complex sorption to Reillex-HPQ resin. Additional experiments performed to determine the best chemical treatment methodology to enhance recovery of sorbed Pu from the resin, and VIS-NIR absorption studies to determine the steady state equilibrium of Pu(IV), Pu(III), and Pu(VI) in nitric acid are discussed.

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Medium: P; Size: vp.

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INIS; OSTI as DE00759219

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  • Institute for Space and Nuclear Power Studies Space Technology and Applications International Forum (STAIF-99), Albuquerque, NM (US), 01/31/1999--02/04/1999

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  • Report No.: LA-UR-98-4392
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 759219
  • Archival Resource Key: ark:/67531/metadc709878

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  • January 31, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • June 20, 2016, 5:47 p.m.

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Pansoy-Hjelvik, M.E.; Silver, G.L.; Reimus, M.A.H. & Ramsey, K.B. Nitrate Anion Exchange in Pu-238 Aqueous Scrap Recovery Operations, article, January 31, 1999; New Mexico. (digital.library.unt.edu/ark:/67531/metadc709878/: accessed July 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.