Table 2.
Summary of selected resin separation tests including treatment steps and outcome
| Resin | Column Type | Oxic or anoxic conditions | Ti(III) treatment | Initial [Utot] (μM)a | UtotRecovered (%)a | Initial U(IV) (%) | Initial U(VI) (%) | Recovered as U(IV) (%)b | Recovered as U(VI) (%)b |
|---|---|---|---|---|---|---|---|---|---|
| Bio-Rad AG1x8 prefilled |
Bio-Rad Poly-prep |
Oxic |
No |
2.1 |
72 |
0 |
100 |
0 |
100 |
| Bio-Rad AG1x8 prefilled |
Bio-Rad Poly-prep |
Oxic |
No |
22.2 |
86 |
0 |
100 |
0 |
100 |
| Bio-Rad AG1x8 powder |
Bio-Rad Poly-prep |
Oxic |
No |
2.1 |
92 |
0 |
100 |
0 |
100 |
| Dowex 1x8 powder |
Bio-Rad Poly-prep |
Oxic |
No |
2.1 |
100 |
0 |
100 |
0 |
100 |
| Dowex 1x8 powder |
Pierce polystyrene |
Oxic |
No |
2.1 |
100 |
0 |
100 |
0 |
100 |
| Bio-Rad AG1x8 prefilled |
Bio-Rad Poly-prep |
Anoxic |
No |
2.1 |
81 |
36 |
64 |
0 |
100 |
| Dowex 1x8 powder |
Pierce polystyrene |
Anoxic |
No |
8.7 |
100 |
98 |
2 |
86 |
14 |
| Dowex 1x8 powder |
Pierce polystyrene |
Anoxic |
Yes |
8.7 |
100 |
98 |
2 |
98 |
2 |
| Dowex 1x8 powder |
Pierce polystyrene |
Anoxic |
Yes |
1.8 |
100 |
0 |
100 |
0 |
100 |
| Dowex 1x8 powder |
Pierce polystyrene |
Anoxic |
Yes |
2.8 |
100 |
100 |
0 |
100 |
0 |
| Dowex 1x8 powder |
Pierce polystyrene |
Anoxic |
Yes |
2.1 |
100 |
10 |
90 |
11 |
89 |
| Dowex 1x8 powder | Pierce polystyrene | Anoxic | Yes | 1.8 | 100 | 48 | 52 | 47 | 53 |
a. 1 mL of uranium solution added to resin, uncertainty in recovered Utot was 3%.
b. Uncertainty in speciation recovery was 1%.