Speciation and surface interactions of actinides on aged ion-exchange resins

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The United States Department of Energy is presently faced with the stabilization and safe disposition of hundreds of metric tons of residue materials resulting from 50+ years of nuclear weapons production activities. These residues encompass a broad range of substrates and radionuclides and include both solid and liquid materials. Combustible residues constitute a significant fraction of the total residue inventory, and an important constituent within the combustible category is spent anion ion-exchange resins. These resins are typically utilized for the separation of plutonium from other radionuclides under strongly acidic nitric or hydrochloric acid solution conditions which favor the formation and ... continued below

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5 p.

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Morris, D.E.; Buscher, C.T. & Donohoe, R.J. September 1, 1997.

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Description

The United States Department of Energy is presently faced with the stabilization and safe disposition of hundreds of metric tons of residue materials resulting from 50+ years of nuclear weapons production activities. These residues encompass a broad range of substrates and radionuclides and include both solid and liquid materials. Combustible residues constitute a significant fraction of the total residue inventory, and an important constituent within the combustible category is spent anion ion-exchange resins. These resins are typically utilized for the separation of plutonium from other radionuclides under strongly acidic nitric or hydrochloric acid solution conditions which favor the formation and partitioning of anionic Pu(IV) nitrato or chloride species. The spent resins are usually rinsed prior to storage as residues to reduce both acid and radionuclide concentrations, but significant radionuclide concentrations remain in these resins, and the long-term effects of concentrated acid and radiolysis on the resin integrity are relatively unexplored. Thus, new research is needed to assess the stability of these resin residues and address the need for further treatment to ensure stability prior to long-term disposal.

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5 p.

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INIS; OSTI as DE97008970

Source

  • Plutonium futures: the science, Santa Fe, NM (United States), 25-27 Aug 1997

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  • Other: DE97008970
  • Report No.: LA-UR--97-2414
  • Report No.: CONF-970844--
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 539847
  • Archival Resource Key: ark:/67531/metadc691574

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Office of Scientific & Technical Information Technical Reports

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  • September 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • June 14, 2016, 4:15 p.m.

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Morris, D.E.; Buscher, C.T. & Donohoe, R.J. Speciation and surface interactions of actinides on aged ion-exchange resins, article, September 1, 1997; New Mexico. (digital.library.unt.edu/ark:/67531/metadc691574/: accessed June 19, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.