ANION EXCHANGE STUDIES IN PHOSPHORIC ACID SOLUTIONS
>The applicability of H/sub 3/PO/sub 4/ solutions to quantitative anion exchange separations was investigated by determining the equilibrium distribution coefficients of Cs, Sr, Ce(III), Zr(IV), Te(IV), Ce(IV), Np(IV), Nb(V), Mo(VI), and U(VI) between Dowex-2 resin in the phosphate form and various strengths of H/ sub 3/PO/sub 4/ solutions. The results show that these elements fall into three groups. The first group, consisting of Cs and Te(IV), does not favor the resin phase to any appreciable extent even at 0.1N H/sub 3/PO/sub 4/. The group composed of Sr, Ce(III), and Ce(IV) are weakly adsorbed at low H/sub 3/PO/sub 4/ concentrations (4 < K/sub d/ < 10). The remaining elements are strongly adsorbed in these solutions (K/sub d/ > 1000). The adsorption of all elements studied decreases monotonically with increasing H/sub 3/PO/sub 4/ concentrations. (auth)
- Research Organization:
- Naval Radiological Defense Lab., San Francisco
- NSA Number:
- NSA-12-009746
- OSTI ID:
- 4309309
- Report Number(s):
- USNRDL-TR-231
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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