Extraction of plutonium ions from aqueous sulfuric acid solution

Details Extraction of plutonium ions from aqueous sulfuric acid solution Extraction of plutonium ions from aqueous sulfuric acid solution

1981-07-23

1984-04-10

Kyle, Deborah L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

423251, 252627, 252631, C01G 4300

Patent

active

044420714

ABSTRACT:
Method for separating plutonium ions from an aqueous solution containing sulfuric acid. The method comprises introducing into the aqueous solution 0.1 to 1.5 moles of nitrate ions per liter of aqueous solution. To the aqueous solution containing nitrate ions, there is added an organic phase comprising a solution of 0.1 to 1.0 M di-2-ethylhexylphosphoric acid in kerosene in a volume ratio of the aqueous solution containing nitrate ions to the organic phase of between 1:1 and 4:1 to extract the plutonium ions into the organic phase. The organic phase containing plutonium ions is then separated from the aqueous solution. A re-extractant aqueous solution containing 0.2 to 1.0 M oxalic acid, and 0 to 0.5 M nitric acid is then added to the separated organic phase to re-extract the plutonium ions into the re-extractant aqueous solution. The re-extractant aqueous solution containing plutonium ions is then separated from the organic phase.

REFERENCES:
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patent: 2924506 (1960-02-01), Anderson et al.
patent: 3288568 (1966-11-01), Tomijima et al.
patent: 3343925 (1967-09-01), Bathellier
patent: 3387945 (1968-06-01), Boudry et al.
Horner, D. E. and C. F. Coleman Plutonium Extraction from Nitrate and Sulfate Solutions by Amines and Organophosphorus Compounds, ORNL-3051, 1961.
Horner, D. E. and C. F. Coleman Recovery of Uranium and Plutonium from Sulfuric Acid Decladding Solutions, ORNL-2830, 1959.

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