There is a need to identify and evaluate suitable high-efficiency robust getter materials that can be deployed for immobilizing and/or retarding the transport of key risk-driver radionuclides such as 99Tc in waste repositories. During the last six years, our getter research group has focused on developing novel getter functionalities that are attached as Self-Assembled Monolayers onto high surface area-nanoporous substrates (~800 -1000 m2/g) or to nanoparticles. We recently tested the 99Tc adsorption performance of a Cu-ethyelenediamine functional monolayer deposited onto titania nanoparticles. Adsorption data indicated that that Cu-EDA functionality was capable of specifically adsorbing 99Tc from the groundwater matrix. This test was part of our continued study to develop and test robust getter materials for immobilizing a number of risk-driver radionuclides in repository environments.
Revised: August 16, 2010 |
Published: November 25, 2003
Citation
Mattigod S.V., G.E. Fryxell, and K.E. Parker. 2003.Immobilizing 99Tc in Waste Repository Environment using Novel Getters.Transactions of the American Nuclear Society 89.PNNL-SA-40641.