Process for the stripping of cesium ions from aqueous solutions
AssigneeKernforschungszentrum Karlsruhe GmbH
InventorsKlaus Heckmann, Walter Rieger, Reinhard Kroebel
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Abstract
A process for the stripping of cesium ions from an aqueous solution in which a precipitation agent is added to the aqueous solution and the resulting precipitate, containing the CS.sup.+ ions is stripped from the solution. Sodium or lithium tetraphenylborates, carrying electron-attracting substituents on the phenyl rings are employed as precipitation agent.
Claims10
Process for selectively stripping cesium ions from a strongly acid aqueous radioactive waste solution in which a precipitation agent is added to the aqueous solution and the resulting precipitate, containing the Cs.sup.+ ions, is separated from the solution, comprising:
- adding to the solution a sodium or lithium tetraphenylborate having electron-attracting substituents on the phenyl rings as the precipitation agent, said precipitation agent being a compound which is disubstituted in the 2,4 positions of each of the phenyl rings, or is fourfold substituted in the 2,3,5,6, positions of each of the phenyl rings, or is fivefold substituted in the 2,3,4,5,6 positions of each of the phenyl rings, and wherein the substituents are fluorine atoms.
Dependencies are inferred from the claim text.