Mineral Surface Processes Responsible for the Decreased Retardation or Enhanced Mobilization of {sub 137}Cs from HLW Tank Discharges

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Experimental research will determine how the sorption chemistry of Cs on Hanford vadose zone sediments changes after contact with solutions characteristic of high-level tank wastes (HLW). Our central hypothesis is that the high ionic-strength of tank wastes (i.e., > 5 mol/L NaNO3) will suppress all surface-exchange reactions of Cs, except those to the highly selective frayed edge sites (FES) of the micaceous fraction. We further speculate that the concentrations, ion selectivity, and structural aspects of the FES will change after contact with the harsh chemical conditions of HLW and these changes will be manifest in the macroscopic sorption behavior of ... continued below

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Zachara, John M.; Serne, R. Jeffrey; Ellis, Paul D. & Bertsch, Paul M. June 1, 2000.

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Experimental research will determine how the sorption chemistry of Cs on Hanford vadose zone sediments changes after contact with solutions characteristic of high-level tank wastes (HLW). Our central hypothesis is that the high ionic-strength of tank wastes (i.e., > 5 mol/L NaNO3) will suppress all surface-exchange reactions of Cs, except those to the highly selective frayed edge sites (FES) of the micaceous fraction. We further speculate that the concentrations, ion selectivity, and structural aspects of the FES will change after contact with the harsh chemical conditions of HLW and these changes will be manifest in the macroscopic sorption behavior of Cs. We believe that migration predictions of Cs can be improved substantially if such changes are understood and quantified.

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  • Other Information: PBD: 1 Jun 2000

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  • Report No.: EMSP-60355--2000
  • DOI: 10.2172/829969 | External Link
  • Office of Scientific & Technical Information Report Number: 829969
  • Archival Resource Key: ark:/67531/metadc787044

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  • June 1, 2000

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  • Dec. 3, 2015, 9:30 a.m.

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  • April 21, 2016, 2:29 p.m.

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Zachara, John M.; Serne, R. Jeffrey; Ellis, Paul D. & Bertsch, Paul M. Mineral Surface Processes Responsible for the Decreased Retardation or Enhanced Mobilization of {sub 137}Cs from HLW Tank Discharges, report, June 1, 2000; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc787044/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.