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Title: Process for extracting technetium from alkaline solutions

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.

Inventors:
 [1];  [2];  [2]
  1. Oak Ridge, TN
  2. Knoxville, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
870037
Patent Number(s):
5443731
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
C - CHEMISTRY C22 - METALLURGY C22B - PRODUCTION AND REFINING OF METALS
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; extracting; technetium; alkaline; solutions; values; aqueous; solution; containing; alkali; metal; hydroxide; nitrate; concentration; molar; contacted; solvent; consisting; crown; diluent; period; time; sufficient; selectively; extract; separated; stripped; aqueous alkaline; alkaline solutions; aqueous alkali; technetium values; solvent containing; time sufficient; solution containing; alkali metal; metal hydroxide; alkaline solution; metal nitrate; selectively extract; extracting technetium; /210/423/

Citation Formats

Moyer, Bruce A, Sachleben, Richard A, and Bonnesen, Peter V. Process for extracting technetium from alkaline solutions. United States: N. p., 1995. Web.
Moyer, Bruce A, Sachleben, Richard A, & Bonnesen, Peter V. Process for extracting technetium from alkaline solutions. United States.
Moyer, Bruce A, Sachleben, Richard A, and Bonnesen, Peter V. Sun . "Process for extracting technetium from alkaline solutions". United States. https://www.osti.gov/servlets/purl/870037.
@article{osti_870037,
title = {Process for extracting technetium from alkaline solutions},
author = {Moyer, Bruce A and Sachleben, Richard A and Bonnesen, Peter V},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1995},
month = {1}
}

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Works referenced in this record:

Srex: a Newprocess for the Extraction and Recovery of Strontium from Acidic Nuclear Waste Streams
journal, February 1991


Extraction of technetium by crown ethers and cryptands
journal, March 1986