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CX-008371: Categorical Exclusion Determination

Non-Acid Elution (NAE) of Cesium From Resorcinol-Formaldehyde Resin
CX(s) Applied: B3.6
Date: 03/27/2012
Location(s): South Carolina
Offices(s): Savannah River Operations Office

NOTE: EVERYTHING IS THE SAME AS REVISION 0 EXCEPT THE END DATE IS EXTENDED. Plans are underway to use small-column ion exchange (SCIX) units installed in high-level waste tanks to remove Cs-137 from highly alkaline salt solutions. Spherical Resorcinol-Formaldehyde (sRF) ion exchange (IX) resin, known for its high selectivity for cesium in highly alkaline radioactive wastes, is the baseline material under consideration for the Hanford site. It is a weak acid cation (WAC) exchange resin and as a result has a high affinity for hydrogen ions. Therefore, it is easily eluted with acid solutions. Nitric acid is used most frequently.