Radionuclide Retention in Concrete Wasteforms

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Assessing long-term performance of Category 3 waste cement grouts for radionuclide encasement requires knowledge of the radionuclide-cement interactions and mechanisms of retention (i.e., sorption or precipitation); the mechanism of contaminant release; the significance of contaminant release pathways; how wasteform performance is affected by the full range of environmental conditions within the disposal facility; the process of wasteform aging under conditions that are representative of processes occurring in response to changing environmental conditions within the disposal facility; the effect of wasteform aging on chemical, physical, and radiological properties; and the associated impact on contaminant release. This knowledge will enable accurate prediction ... continued below

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Wellman, Dawn M.; Jansik, Danielle P.; Golovich, Elizabeth C. & Cordova, Elsa A. September 24, 2012.

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Description

Assessing long-term performance of Category 3 waste cement grouts for radionuclide encasement requires knowledge of the radionuclide-cement interactions and mechanisms of retention (i.e., sorption or precipitation); the mechanism of contaminant release; the significance of contaminant release pathways; how wasteform performance is affected by the full range of environmental conditions within the disposal facility; the process of wasteform aging under conditions that are representative of processes occurring in response to changing environmental conditions within the disposal facility; the effect of wasteform aging on chemical, physical, and radiological properties; and the associated impact on contaminant release. This knowledge will enable accurate prediction of radionuclide fate when the wasteforms come in contact with groundwater. Data collected throughout the course of this work will be used to quantify the efficacy of concrete wasteforms, similar to those used in the disposal of LLW and MLLW, for the immobilization of key radionuclides (i.e., uranium, technetium, and iodine). Data collected will also be used to quantify the physical and chemical properties of the concrete affecting radionuclide retention.

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  • Report No.: PNNL-21794
  • Grant Number: AC05-76RL01830
  • DOI: 10.2172/1089108 | External Link
  • Office of Scientific & Technical Information Report Number: 1089108
  • Archival Resource Key: ark:/67531/metadc837973

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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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Creation Date

  • September 24, 2012

Added to The UNT Digital Library

  • May 19, 2016, 9:45 a.m.

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  • Dec. 1, 2016, 1:06 p.m.

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Wellman, Dawn M.; Jansik, Danielle P.; Golovich, Elizabeth C. & Cordova, Elsa A. Radionuclide Retention in Concrete Wasteforms, report, September 24, 2012; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc837973/: accessed November 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.