Process for extracting technetium from alkaline solutions
Patent
·
OSTI ID:870037
- Oak Ridge, TN
- Knoxville, TN
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.
- Research Organization:
- LOCKHEED MARTIN ENRGY SYST INC
- DOE Contract Number:
- AC05-84OR21400
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Number(s):
- US 5443731
- OSTI ID:
- 870037
- Country of Publication:
- United States
- Language:
- English
Extraction of technetium by crown ethers and cryptands
|
journal | March 1986 |
Srex: a Newprocess for the Extraction and Recovery of Strontium from Acidic Nuclear Waste Streams
|
journal | February 1991 |
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Related Subjects
/210/423/
alkali
alkali metal
alkaline
alkaline solution
alkaline solutions
aqueous
aqueous alkali
aqueous alkaline
concentration
consisting
contacted
containing
crown
diluent
extract
extracting
extracting technetium
hydroxide
metal
metal hydroxide
metal nitrate
molar
nitrate
period
process
selectively
selectively extract
separated
solution
solution containing
solutions
solvent
solvent containing
stripped
sufficient
technetium
technetium values
time
time sufficient
values
alkali
alkali metal
alkaline
alkaline solution
alkaline solutions
aqueous
aqueous alkali
aqueous alkaline
concentration
consisting
contacted
containing
crown
diluent
extract
extracting
extracting technetium
hydroxide
metal
metal hydroxide
metal nitrate
molar
nitrate
period
process
selectively
selectively extract
separated
solution
solution containing
solutions
solvent
solvent containing
stripped
sufficient
technetium
technetium values
time
time sufficient
values