Ion-exchange processes and mechanisms in glasses

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'Recent performance assessment calculations of a disposal system at the Hanford Site in Washington State for low-activity waste glass show that a sodium ion exchange reaction can effectively increase the radionuclide release rate by over a factor of 1,000. The susceptibility of the glass to alkali ion exchange is thus a major factor limiting waste loading. However, low temperature ion exchange has not been thought to be important in recent analyses of waste glass durability. The objective of this work is to develop an understanding of the processes and mechanisms controlling alkali ion exchange and to correlate the kinetics of ... continued below

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2 pages

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McGrail, B.P.; Shuh, D.K.; Darab, J.G. & Baer, D.R. June 1, 1998.

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Description

'Recent performance assessment calculations of a disposal system at the Hanford Site in Washington State for low-activity waste glass show that a sodium ion exchange reaction can effectively increase the radionuclide release rate by over a factor of 1,000. The susceptibility of the glass to alkali ion exchange is thus a major factor limiting waste loading. However, low temperature ion exchange has not been thought to be important in recent analyses of waste glass durability. The objective of this work is to develop an understanding of the processes and mechanisms controlling alkali ion exchange and to correlate the kinetics of the ion exchange reaction with glass structural properties. The fundamental understanding of the ion exchange process developed under this study is targeted at developing lower ion-exchange rate glasses that would remain durable at higher alkali waste loading. This report summarizes eight months of work on this three-year project that is being performed cooperatively between Pacific Northwest National Laboratory and Lawrence Berkeley National Laboratory.'

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2 pages

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  • Other: DE00013687
  • Report No.: EMSP-60362--98
  • Grant Number: NONE
  • DOI: 10.2172/13687 | External Link
  • Office of Scientific & Technical Information Report Number: 13687
  • Archival Resource Key: ark:/67531/metadc618513

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 1, 1998

Added to The UNT Digital Library

  • June 16, 2015, 7:43 a.m.

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  • June 13, 2016, 6:05 p.m.

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McGrail, B.P.; Shuh, D.K.; Darab, J.G. & Baer, D.R. Ion-exchange processes and mechanisms in glasses, report, June 1, 1998; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc618513/: accessed May 27, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.