Laboratory Report on the Removal of Pertechnetate From Tank 241-an-105 Simulant Using Purolite A530e

Abstract

This effort falls under the technetium management initiative and will provide data for those who will make decisions regarding the handling and disposition of technetium. To that end, the objective of this effort is to challenge Purolite®l A530E against a double-shell tank simulant from tank 241-AN-105 spiked with pertechnetate (Tc04} The Purolite ® A530E is commercially available and is currently being used at the 200 West Pump and Treat Groundwater Treatment Plant to remove pertechnetate. It has been demonstrated that Purolite® A530E is highly effective in removing Tc04' from a water matrix. Purolite® A530E is the commercial product of the Oak Ridge National Laboratory's Biquat'M2 resin. Further work has demonstrated that technetium-loaded A530E achieves a leachability index in Cast Stone of 12.5 (RPP-RPT-39195, Assessment of Technetium Leachability in Cement-Stabilized Basin 43 Groundwater Brine). When the batch contacted with various dilutions of spiked AN-105 simulant, the Purolite® A530E resin demonstrated the following distribution coefficients (Kd): Distribution Coefficients as a Function of Sodium Molarity.

Literature review of the potential impact of glycolic acid on the technetium chemistry of srs tank waste

“…Since it was not discussed, it is assumed that the simulant was spiked at room temperature. It was reported that including or omitting glycolate did not affect Tc adsorption results when using anion exchange resin Purolite ® A530E 54 (although this detail was omitted in Revision 1 of that document for unknown reasons). Sodium was in the range of 5.5 to 6.5 M. Duncan et al also saw high Tc decontamination using the pertechnetatespiked simulant and a reductive tin apatite adsorbent up to pH 12.…”