Dynamic effects of tank waste aging on radionuclide-complexant interactions. 1998 annual progress report

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'The overall objective of this project is to provide a scientific basis for safely processing complexant-containing high-level tank wastes for disposal. The key goals are to identify a means to prepare realistic complexant-containing tank waste simulants, and to use those simulants to determine the relative importance of organic complexants and their breakdown products on the partitioning of important radionuclides. These goals will be accomplished by artificially aging complexant-containing tank waste simulants using microwave, ultrasound, and photolysis techniques. The simulants will be compared to samples of actual Hanford tank wastes to determine the most realistic aging method, on the basis of ... continued below

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3 pages

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Chamberlin, R. & Arterburn, J.B. June 1, 1998.

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Description

'The overall objective of this project is to provide a scientific basis for safely processing complexant-containing high-level tank wastes for disposal. The key goals are to identify a means to prepare realistic complexant-containing tank waste simulants, and to use those simulants to determine the relative importance of organic complexants and their breakdown products on the partitioning of important radionuclides. These goals will be accomplished by artificially aging complexant-containing tank waste simulants using microwave, ultrasound, and photolysis techniques. The simulants will be compared to samples of actual Hanford tank wastes to determine the most realistic aging method, on the basis of the organic fragmentation and the partitioning behavior of the important radionuclides {sup 90}Sr, {sup 99}Tc, and {sup 239}Pu. Also, the authors will use their simulant aging process to investigate the relative effects of chelator degradation products on the partitioning of important radionuclides from the waste. Using NMR-active labels in the chelators, they will use a combinatorial approach of generating multiple chelator fragments in a single experiment and then determining which fragments have a negative effect on the separations chemistry. The successful completion of this goal will specifically identify the most problematic organic fragments in complexant-containing waste and provide the basis for developing successful treatment strategies for these wastes. This report summarizes work carried out at Los Alamos during the first 8 months of a 3-year project.'

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3 pages

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  • Other: DE00013749
  • Report No.: EMSP-59993--98
  • Grant Number: NONE
  • DOI: 10.2172/13749 | External Link
  • Office of Scientific & Technical Information Report Number: 13749
  • Archival Resource Key: ark:/67531/metadc622831

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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, 6:03 p.m.

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Chamberlin, R. & Arterburn, J.B. Dynamic effects of tank waste aging on radionuclide-complexant interactions. 1998 annual progress report, report, June 1, 1998; New Mexico. (digital.library.unt.edu/ark:/67531/metadc622831/: accessed October 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.