The influence of penetrating gamma radiation on the reaction of simulated nuclear waste glass in tuff groundwater

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Static leaching experiments have been performed to determine the influence of penetrating gamma radiation on the reaction of simulated nuclear waste glass in tuff groundwater at 90{degree}C. Both the leachates and the reacted glass monoliths were analyzed to characterize the reaction. Radiation was seen to acidify the leachates, but the high bicarbonate content of the groundwater prevented the pH values from dropping below 6.4. The glass reaction tended to raise the pH. Glasses based on SRL 165 black frit and PNL 76-68 glass compositions were leached. The SRL 165 type glasses were quite durable (as measured by the elemental mass ... continued below

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27 p.

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Ebert, W.L.; Bates, J.K.; Abrajano, T.A. Jr. & Gerding, T.J. November 1, 1989.

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Static leaching experiments have been performed to determine the influence of penetrating gamma radiation on the reaction of simulated nuclear waste glass in tuff groundwater at 90{degree}C. Both the leachates and the reacted glass monoliths were analyzed to characterize the reaction. Radiation was seen to acidify the leachates, but the high bicarbonate content of the groundwater prevented the pH values from dropping below 6.4. The glass reaction tended to raise the pH. Glasses based on SRL 165 black frit and PNL 76-68 glass compositions were leached. The SRL 165 type glasses were quite durable (as measured by the elemental mass loss after constant reaction times) and were unaffected by radiation. The PNL 76-68 glasses were much less durable, with the durability decreasing (after constant reaction times) as the exposure rate was increased. The primary effect of radiation is a lowering of the leachate pH which then affects the glass leaching rate. 9 refs., 5 figs.

Physical Description

27 p.

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INIS; OSTI as DE90002257

Source

  • 4. international symposium on ceramics in nuclear waste management, Indianapolis, IN (United States), 23-27 Apr 1989

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  • Other: DE90002257
  • Report No.: CONF-890488--12
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 137546
  • Archival Resource Key: ark:/67531/metadc623581

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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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  • November 1, 1989

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  • June 16, 2015, 7:43 a.m.

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  • Dec. 14, 2015, 12:25 p.m.

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Ebert, W.L.; Bates, J.K.; Abrajano, T.A. Jr. & Gerding, T.J. The influence of penetrating gamma radiation on the reaction of simulated nuclear waste glass in tuff groundwater, article, November 1, 1989; Illinois. (digital.library.unt.edu/ark:/67531/metadc623581/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.