IRON-PHOSPHATE GLASS FOR IMMOBILIZATION OF RADIOACTIVE TECHNETIUM

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Technetium-99 (Tc-99) can bring a serious environmental threat because of its high fission yield, long half-life, and high solubility and mobility in the ground water. The present work investigated the immobilization of Tc-99 (surrogated by Re) by heat-treating mixtures of an iron-phosphate glass with 1.5 to 6 wt.% KReO{sub 4} at {approx}1000 C. The Re retention in the glass was as high as {approx}1.2 wt. % while the loss of Re by evaporation during melting was {approx}50%. Re was uniformly distributed within the glass. The normalized Re release by the 7-day Product Consistency Test was {approx}0.39 g/m{sup 2}, comparable with ... continued below

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AA, KRUGER; PR, HRMA; K, XU; J, CHOI; W, UM & J, HEO March 19, 2012.

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  • Hanford Site (Wash.)
    Publisher Info: Hanford Site (HNF), Richland, WA (United States))
    Place of Publication: Richland, Washington

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Technetium-99 (Tc-99) can bring a serious environmental threat because of its high fission yield, long half-life, and high solubility and mobility in the ground water. The present work investigated the immobilization of Tc-99 (surrogated by Re) by heat-treating mixtures of an iron-phosphate glass with 1.5 to 6 wt.% KReO{sub 4} at {approx}1000 C. The Re retention in the glass was as high as {approx}1.2 wt. % while the loss of Re by evaporation during melting was {approx}50%. Re was uniformly distributed within the glass. The normalized Re release by the 7-day Product Consistency Test was {approx}0.39 g/m{sup 2}, comparable with that in phosphate-bonded ceramics and borosilicate glasses. These results suggest that iron-phosphate glass can provide a good matrix for immobilizing Tc-99.

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  • WM2012 WASTE MANAGEMENT SYMPOSIA 02/26/2012 THRU 03/01/2012 PHOENIX AZ

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  • Report No.: ORP-52101-FP Rev 0
  • Grant Number: DE-AC27-08RV14800
  • Office of Scientific & Technical Information Report Number: 1038054
  • Archival Resource Key: ark:/67531/metadc837417

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  • March 19, 2012

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  • May 19, 2016, 3:16 p.m.

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  • July 25, 2016, 6:30 p.m.

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AA, KRUGER; PR, HRMA; K, XU; J, CHOI; W, UM & J, HEO. IRON-PHOSPHATE GLASS FOR IMMOBILIZATION OF RADIOACTIVE TECHNETIUM, article, March 19, 2012; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc837417/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.