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Title: Radionuclide Retention in Concrete Wasteforms

Abstract

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.

Authors:
; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1089108
Report Number(s):
PNNL-21794
830403000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English

Citation Formats

Wellman, Dawn M., Jansik, Danielle P., Golovich, Elizabeth C., and Cordova, Elsa A.. Radionuclide Retention in Concrete Wasteforms. United States: N. p., 2012. Web. doi:10.2172/1089108.
Wellman, Dawn M., Jansik, Danielle P., Golovich, Elizabeth C., & Cordova, Elsa A.. Radionuclide Retention in Concrete Wasteforms. United States. doi:10.2172/1089108.
Wellman, Dawn M., Jansik, Danielle P., Golovich, Elizabeth C., and Cordova, Elsa A.. Mon . "Radionuclide Retention in Concrete Wasteforms". United States. doi:10.2172/1089108. https://www.osti.gov/servlets/purl/1089108.
@article{osti_1089108,
title = {Radionuclide Retention in Concrete Wasteforms},
author = {Wellman, Dawn M. and Jansik, Danielle P. and Golovich, Elizabeth C. and Cordova, Elsa A.},
abstractNote = {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.},
doi = {10.2172/1089108},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Sep 24 00:00:00 EDT 2012},
month = {Mon Sep 24 00:00:00 EDT 2012}
}

Technical Report:

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