SEPARATION OF STRONTIUM-90 FROM CALCIUM BY SOLVENT EXTRACTION
To produce high purity strontium-90 from irradiated uranium reprocessing waste solutions, a process is developed to separate strontium from calcium. This is done by use of a solvent extraction process using D2EHPA in Amsco as the extractant. Several flowsheets are demonstrated. The processes use an acetic acid-acetate buffered aqueous phase which is countercurrently contacted in an 11stage mixer-settler with a D2EHPA-Amsco organic phase. An alcohol (2- ethylhexanol) is added to the organic phase to reduce distribution coefficients and to reduce the effect of organic phase loading on distribution coefficients. Calcium and strontium enter the process as acetates. A product containing more than 99% of the strontium and no calcium, within analytical error, is produced from a feed solution containing a 20-fold excess by weight of calcium. (auth)
- Research Organization:
- Oak Ridge National Lab., Tenn.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-15-024909
- OSTI ID:
- 4021971
- Journal Information:
- Industrial and Engineering Chemistry (U.S.) Formerly J. Ind. Eng. Chem. Superseded by Chem. Technol., Vol. Vol: 53; Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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