Reillex{trademark}-HPQ anion exchange column chromatography: Removal of pertechnetate from DSSF-5 simulant at various flow rates
The 1% breakthrough volumes (BTV) for TcO{sub 4}{sup {minus}} on Reillex-HPQ anion exchange resin columns have been measured as a function of flow rate. The 1% BTV is defined as that point in the column loading when an aliquot of eluent contains 1% of the activity of an equivalent aliquot of column feed solution. The 2.54 x 50 cm resin columns were loaded with a DSSF-5 [Hanford Waste] simulant containing 5.0 x 10{sup {minus}5} M {sup 99}TcO{sub 4}{sup {minus}} and {sup 95m}TcO{sub 4}{sup {minus}} tracer. Seven flow rate experiments were performed with flow rates varying from 15 to 65 mL/min. The columns were up-flow eluted with a 1.0 M NaOH/1.0 M ethylenediamine/0.0050 M SnCl{sub 2} solution. For six flow experiments, the average technetium eluted was (97.1 {+-} 6.0) percent and the average technetium accountability for loading and eluting was (97.8 {+-} 5.9) percent. Loading experiments to 90% breakthrough were performed at a flow rate of 60 mL/min for Reillex-HPQ and AG{reg_sign}MP-1 columns. The Reillex-HPQ displayed better column loading performance as indicated by smaller percent breakthrough volumes. However, in this experiment, the AG MP-1 gave 100% elution, whereas the Reillex-HPQ gave only 70% elution.
- Research Organization:
- Texas A and M Univ., Commerce, TX (US)
- OSTI ID:
- 20019005
- Journal Information:
- Solvent Extraction and Ion Exchange, Journal Name: Solvent Extraction and Ion Exchange Journal Issue: 6 Vol. 17; ISSN 0736-6299; ISSN SEIEDB
- Country of Publication:
- United States
- Language:
- English
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