Behavior of technetium in nuclear waste vitrification processes

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• 作者：Ian L. Pegg
• 关键词：Technetium ; Vitrification ; Hanford ; Technetium volatility ; Technetium glass structure
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：305
• 期：1
• 页码：287-292
• 全文大小：553 KB
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  8.Kim DS et al (2005) Tc reduction chemistry and crucible melting studies with simulated Hanford low-activity waste PNNL-15131. Pacific Northwest National Laboratory, RichlandView Article
  9.Muller IS, Viragh C, Gan H, Matlack KS, Pegg IL (2009) Hyperfine Interact 17:191
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  12.Matlack KS, Muller IS, Joseph I, Pegg IL (2010) Improving technetium retention in Hanford LAW glass—Phase 1. VSL-10R1920-1, Rev. 0. Vitreous State Laboratory, The Catholic University of America, Washington
  13.Matlack KS, Muller IS, Callow R, D’Angelo N, Bardakci T, Joseph I, Pegg IL (2011) Improving technetium retention in Hanford LAW glass—Phase 2. VSL-11R2260-1, Rev. 0. Vitreous State Laboratory, The Catholic University of America, Washington
  14.Matlack KS, Abramowitz H, Brandys M, Muller IS, Callow RA, D’Angelo N, Cecil R, Joseph I, Pegg IL (2012) Technetium retention in WTP LAW glass with recycle flow-sheet: DM10 melter testing. VSL-12T2460-1, Rev. 0. Vitreous State Laboratory, The Catholic University of America, Washington
  15.Matlack KS, Abramowitz H, Muller IS, Gilbo K, Penafiel M, Pegg IL (2013) Wet electrostatic precipitator performance and technetium-rhenium behavior in LAW recycle flow-sheet. VSL-13R2800-1, Rev. 0. Vitreous State Laboratory, The Catholic University of America, Washington
  
• 作者单位：Ian L. Pegg (1)
  
  1. Vitreous State Laboratory, The Catholic University of America, 620 Michigan Avenue, NE, Washington, DC, 20064, USA
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Nuclear Chemistry
  Physical Chemistry
  Nuclear Physics, Heavy Ions and Hadrons
  Diagnostic Radiology
  Inorganic Chemistry
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1588-2780

文摘

Nearly 100 tests were performed with prototypical melters and off-gas system components to investigate the extents to which technetium is incorporated into the glass melt, partitioned to the off-gas stream, and captured by the off-gas treatment system components during waste vitrification. The tests employed several simulants, spiked with 99mTc and Re (a potential surrogate), of the low activity waste separated from nuclear wastes in storage in the Hanford tanks, which is planned for immobilization in borosilicate glass. Single-pass technetium retention averaged about 35?% and increased significantly with recycle of the off-gas treatment fluids. The fraction escaping the recycle loop was very small.