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- W4233117777 abstract "for treatment and disposal of approximately 90 million gallons of HLW at the DOE Savannah River Site, Idaho National Engineering and Environmental Laboratory, and Hanford Site are neither cost-effective nor practical. Processes to separate the HLW constituents from the low-level waste (LLW) fraction are required to reduce the volume of waste that must be treated and disposed of and to reduce the cost of treatment and disposal. Use of EaIX materials, conjoined with the use of porous membranes that also are under development, can significantly reduce or eliminate secondary wastes associated with more traditional ion-exchange or solvent extraction technologies and, thus, can help improve the effectiveness and reduce the cost of DOE's waste treatment and disposal efforts. Beyond its importance as a cost issue, separation of TcO{sub 4{sup -}} from HLW also addresses a critical environmental issue. The most common isotope of technetium ({sup 99}Tc) has an extremely long half-life of 210,000 years. Rapid development of advanced methods to remove and separate this long-lived radioactive isotope is important because most of the technetium in the DOE HLW probably is in the form of TcO{sub 4{sup -}}, which is highly mobile in soils and groundwater. This project is focused on anion separation and, in particular, the selective separation of TcO{sub 4{sup -}} from a solution containing excess NO{sub 3{sup -}}. The results of this research can be used to also design EaIX materials to remove other anions." @default.
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- W4233117777 date "1999-05-03" @default.
- W4233117777 modified "2023-09-27" @default.
- W4233117777 title "Electroactive Materials for Anion Separation - Technetium from Nitrate" @default.
- W4233117777 doi "https://doi.org/10.2172/15006044" @default.
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