Process for extracting technetium from alkaline solutions

Details Process for extracting technetium from alkaline solutions Process for extracting technetium from alkaline solutions

1994-07-21

1995-08-22

Dawson, Robert A.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210638, 210639, 423 2, 423 10, 423 49, 423157, B01D 1100

Patent

active

054437318

ABSTRACT:
A process for extracting technetium values from an aqueous alkaline solution containing at least one alkali metal hydroxide and at least one alkali metal nitrate, the at least one alkali metal nitrate having a concentration of from about 0.1 to 6 molar. The solution is contacted with a solvent consisting of a crown ether in a diluent for a period of time sufficient to selectively extract the technetium values from the aqueous alkaline solution. The solvent containing the technetium values is separated from the aqueous alkaline solution and the technetium values are stripped from the solvent.

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Horwitz, E. P. et al. "SREX: A New Process for the Extraction and Recovery of Strontium from Acidic Waste Streams" Solvent Extraction and Ion Exchange, 9(1) 1-25 (1991).
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Korpusov, G. V. et al "Extraction of Technetium by Dicyclohexyl-18-Crown-6" Sov. Radiochem. 26(3) 390-392 (1984), May 11, 1983.
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