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Lee, D.D.; Travis, J.R.; Gibson, M.R.
Oak Ridge National Lab., TN (United States). Funding organisation: USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States); USDOE Assistant Secretary for Policy, Planning and Program Evaluation, Washington, DC (United States)1997
Oak Ridge National Lab., TN (United States). Funding organisation: USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States); USDOE Assistant Secretary for Policy, Planning and Program Evaluation, Washington, DC (United States)1997
AbstractAbstract
[en] This report describes the work done in support of the development of technology for the continuous removal and concentration of radioactive cesium in supernatant from Melton Valley Storage Tanks (MVSTs) at the ORNL site. The primary objective was to test candidate absorbers and ion exchangers under continuous-flow conditions using actual supernatant from the MVSTs. An experimental system contained in a hot-cell facility was constructed to test the materials in columns or modules using the same batch of supernatant to allow comparison on an equal basis. Resorcinol/formaldehyde (RF) resin was evaluated at three flow rates with 50% breakthrough ranges of 35 to 50 column volumes (CV) and also through a series of five loading/elution/regeneration cycles. The results reported here include the cesium loading breakthrough curves, elution curves (when applicable), and operational problems and observations for each material. The comparative evaluations should provide critical data for the selection of the sorbent for the ORNL Cesium Removal Demonstration project. These results will be used to help determine the design parameters for demonstration-scale systems. Such parameters include rates of cesium removal, quantity of resin or sorbent to be used, and elution and regeneration requirements, if applicable
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Dec 1997; 64 p; CONTRACT AC05-96OR22464; ALSO AVAILABLE FROM OSTI AS DE98003624; NTIS; US GOVT. PRINTING OFFICE DEP
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