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Leonard, R.A.; Aase, S.B.; Arafat, H.A.; Conner, C.; Falkenberg, J.R.; Vandegrift, G.F.
Argonne National Lab., IL (United States). Funding organisation: US Department of Energy (United States)2001
Argonne National Lab., IL (United States). Funding organisation: US Department of Energy (United States)2001
AbstractAbstract
[en] A caustic-side solvent extraction (CSSX) process to remove cesium from Savannah River Site (SRS) high-level waste was tested in a minicontactor (2-cm centrifugal contactor). In the first phase of this effort, the minicontactor stage efficiency was improved from 60% to greater than 80% to meet the SRS process requirements using a 32-stage CSSX flowsheet. Then, the CSSX flowsheet was demonstrated in a 32-stage unit, first without solvent recycle, then with it. In both cases, the key process goals were achieved: (1) the cesium was removed from the waste with decontamination factors greater than 40,000 and (2) the recovered cesium was concentrated by a factor of 15 in dilute nitric acid. Oak Ridge National Laboratory (ORNL) analysis of the recycled solvent showed no evidence of impurity buildup
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21 Mar 2001; 21 p; W-31-109-ENG-38; Available from https://www.osti.gov/servlets/purl/779797-lpvdDz/native/
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Report
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ALKALI METAL COMPOUNDS, ALKALI METALS, DIAGRAMS, ELEMENTS, EXTRACTION, HYDROGEN COMPOUNDS, INFORMATION, INORGANIC ACIDS, INORGANIC COMPOUNDS, MANAGEMENT, MATERIALS, METALS, NATIONAL ORGANIZATIONS, NITROGEN COMPOUNDS, OXYGEN COMPOUNDS, PROCESSING, RADIOACTIVE MATERIALS, RADIOACTIVE WASTE MANAGEMENT, RADIOACTIVE WASTES, SEPARATION PROCESSES, US AEC, US DOE, US ERDA, US ORGANIZATIONS, WASTE MANAGEMENT, WASTE PROCESSING, WASTES
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