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Alternate Methods for Eluting Cesium from Spherical Resorcinol-Formaldehyde Resin.

DE2009948855

Publication Date	2009
Personal Author	Taylor, P. A.; Johnson, H. L.
Page Count	45
Abstract	A small-column ion exchange (SCIX) system has been proposed for removing cesium from the supernate and dissolved salt solutions in the high-level-waste tanks at the Savannah River Site (SRS). The SCIX system could use either crystalline silicotitanate (CST), an inorganic, non-regenerable sorbent, or spherical resorcinol-formaldehyde (RF), a new regenerable resin, to remove cesium from the waste solutions. The baseline method for eluting the cesium from the RF resin uses 15 bed volumes (BV) of 0.5 M nitric acid (HNO3). The nitric acid eluate, containing the radioactive cesium, would be combined with the sludge from the waste tanks and would be converted into glass at the Defense Waste Processing Facility (DWPF) at SRS. The amount of nitric acid that would be used to elute the RF resin, using the current elution protocol, exceeds the capacity of DWPF to destroy the nitrate ions and maintain the required chemical reducing environment in the glass melt. Installing a denitration evaporator at SRS is technically feasible but would add considerable cost to the project.
Keywords	Cesium Ion exchange Radioactive waste processing Resins Salt High level radioactive wastes Sorbents Sludges Tanks Glass Nitric acid Resorcinol-formaldehyde resin
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Oak Ridge National Lab., TN.; Department of Energy, Washington, DC.; Tennessee Univ. at Chattanooga.
Supplemental Notes	Prepared in cooperation with Tennessee Univ. at Chattanooga. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200922
Contract Number	DE-AC05-00OR22725

Alternate Methods for Eluting Cesium from Spherical Resorcinol-Formaldehyde Resin.

Alternate Methods for Eluting Cesium from Spherical Resorcinol-Formaldehyde Resin.
DE2009948855

Publication Date	2009
Personal Author	Taylor, P. A.; Johnson, H. L.
Page Count	45
Abstract	A small-column ion exchange (SCIX) system has been proposed for removing cesium from the supernate and dissolved salt solutions in the high-level-waste tanks at the Savannah River Site (SRS). The SCIX system could use either crystalline silicotitanate (CST), an inorganic, non-regenerable sorbent, or spherical resorcinol-formaldehyde (RF), a new regenerable resin, to remove cesium from the waste solutions. The baseline method for eluting the cesium from the RF resin uses 15 bed volumes (BV) of 0.5 M nitric acid (HNO3). The nitric acid eluate, containing the radioactive cesium, would be combined with the sludge from the waste tanks and would be converted into glass at the Defense Waste Processing Facility (DWPF) at SRS. The amount of nitric acid that would be used to elute the RF resin, using the current elution protocol, exceeds the capacity of DWPF to destroy the nitrate ions and maintain the required chemical reducing environment in the glass melt. Installing a denitration evaporator at SRS is technically feasible but would add considerable cost to the project.
Keywords	Cesium Ion exchange Radioactive waste processing Resins Salt High level radioactive wastes Sorbents Sludges Tanks Glass Nitric acid Resorcinol-formaldehyde resin
Source Agency	Technical Information Center Oak Ridge Tennessee
Corporate Authors	Oak Ridge National Lab., TN.; Department of Energy, Washington, DC.; Tennessee Univ. at Chattanooga.
Supplemental Notes	Prepared in cooperation with Tennessee Univ. at Chattanooga. Sponsored by Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	200922
Contract Number	DE-AC05-00OR22725