Process for extracting technetium from alkaline solutions

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Description

This invention relates generally to a process for extracting technetium from nuclear wastes and more particularly to a process for extracting technetium from alkaline waste solutions containing technetium and high concentrations of alkali metal nitrates. 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 comprises the steps of: contacting the aqueous alkaline solution with a solvent consisting of a crown ether in a diluent, the diluent being a water-immiscible organic liquid in which the crown ether is soluble, for a period of time sufficient ... continued below

Physical Description

20 p.

Creation Information

Moyer, B.A.; Sachleben, R.A. & Bonnesen, P.V. December 31, 1994.

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Description

This invention relates generally to a process for extracting technetium from nuclear wastes and more particularly to a process for extracting technetium from alkaline waste solutions containing technetium and high concentrations of alkali metal nitrates. 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 comprises the steps of: contacting the aqueous alkaline solution with a solvent consisting of a crown ether in a diluent, the diluent being a water-immiscible organic liquid in which the crown ether is soluble, for a period of time sufficient to selectively extract the technetium values from the aqueous alkaline solution into the solvent; separating the solvent containing the technetium values from the aqueous alkaline solution; and stripping the technetium values from the solvent by contacting the solvent with water.

Physical Description

20 p.

Notes

OSTI as DE97009530

Source

  • Other Information: PBD: 1994

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  • Other: DE97009530
  • Report No.: PATENTS-US--A8278211
  • Grant Number: AC05-84OR21400
  • Office of Scientific & Technical Information Report Number: 555321
  • Archival Resource Key: ark:/67531/metadc689866

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • December 31, 1994

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

Description Last Updated

  • Jan. 22, 2016, 1:58 p.m.

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Citations, Rights, Re-Use

Moyer, B.A.; Sachleben, R.A. & Bonnesen, P.V. Process for extracting technetium from alkaline solutions, patent, December 31, 1994; Tennessee. (digital.library.unt.edu/ark:/67531/metadc689866/: accessed December 13, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.