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Title: Extraction processes and solvents for recovery of cesium, strontium, rare earth elements, technetium and actinides from liquid radioactive waste

Abstract

Cesium and strontium are extracted from aqueous acidic radioactive waste containing rare earth elements, technetium and actinides, by contacting the waste with a composition of a complex organoboron compound and polyethylene glycol in an organofluorine diluent mixture. In a preferred embodiment the complex organoboron compound is chlorinated cobalt dicarbollide, the polyethylene glycol has the formula RC.sub.6 H.sub.4 (OCH.sub.2 CH.sub.2).sub.n OH, and the organofluorine diluent is a mixture of bis-tetrafluoropropyl ether of diethylene glycol with at least one of bis-tetrafluoropropyl ether of ethylene glycol and bis-tetrafluoropropyl formal. The rare earths, technetium and the actinides (especially uranium, plutonium and americium), are extracted from the aqueous phase using a phosphine oxide in a hydrocarbon diluent, and reextracted from the resulting organic phase into an aqueous phase by using a suitable strip reagent.

Inventors:
 [1];  [1];  [1];  [2];  [1];  [3];  [4];  [5];  [6]
  1. (St. Petersburg, RU)
  2. (Ozersk, RU)
  3. (Aberdeen, ID)
  4. (Arco, ID)
  5. (Idaho Falls, ID)
  6. (Pocatello, ID)
Issue Date:
Research Org.:
Idaho National Engineering and Environmental Laboratory, Idaho Falls, ID
OSTI Identifier:
873910
Patent Number(s):
6270737
Assignee:
United States of America as represented by United States Department (Washington, DC) INEEL
DOE Contract Number:  
AC07-94ID13223
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
extraction; processes; solvents; recovery; cesium; strontium; rare; earth; elements; technetium; actinides; liquid; radioactive; waste; extracted; aqueous; acidic; containing; contacting; composition; complex; organoboron; compound; polyethylene; glycol; organofluorine; diluent; mixture; preferred; embodiment; chlorinated; cobalt; dicarbollide; formula; och; oh; bis-tetrafluoropropyl; diethylene; ethylene; formal; earths; especially; uranium; plutonium; americium; phase; phosphine; oxide; hydrocarbon; reextracted; resulting; organic; suitable; strip; reagent; aqueous acid; liquid radioactive; phosphine oxide; aqueous acidic; hydrocarbon diluent; ethylene glycol; polyethylene glycol; extraction process; earth elements; rare earths; organic phase; preferred embodiment; rare earth; radioactive waste; aqueous phase; cobalt dicarbollide; waste containing; earth element; boron compound; containing rare; extraction processes; /423/252/

Citation Formats

Zaitsev, Boris N., Esimantovskiy, Vyacheslav M., Lazarev, Leonard N., Dzekun, Evgeniy G., Romanovskiy, Valeriy N., Todd, Terry A., Brewer, Ken N., Herbst, Ronald S., and Law, Jack D. Extraction processes and solvents for recovery of cesium, strontium, rare earth elements, technetium and actinides from liquid radioactive waste. United States: N. p., 2001. Web.
Zaitsev, Boris N., Esimantovskiy, Vyacheslav M., Lazarev, Leonard N., Dzekun, Evgeniy G., Romanovskiy, Valeriy N., Todd, Terry A., Brewer, Ken N., Herbst, Ronald S., & Law, Jack D. Extraction processes and solvents for recovery of cesium, strontium, rare earth elements, technetium and actinides from liquid radioactive waste. United States.
Zaitsev, Boris N., Esimantovskiy, Vyacheslav M., Lazarev, Leonard N., Dzekun, Evgeniy G., Romanovskiy, Valeriy N., Todd, Terry A., Brewer, Ken N., Herbst, Ronald S., and Law, Jack D. Mon . "Extraction processes and solvents for recovery of cesium, strontium, rare earth elements, technetium and actinides from liquid radioactive waste". United States. https://www.osti.gov/servlets/purl/873910.
@article{osti_873910,
title = {Extraction processes and solvents for recovery of cesium, strontium, rare earth elements, technetium and actinides from liquid radioactive waste},
author = {Zaitsev, Boris N. and Esimantovskiy, Vyacheslav M. and Lazarev, Leonard N. and Dzekun, Evgeniy G. and Romanovskiy, Valeriy N. and Todd, Terry A. and Brewer, Ken N. and Herbst, Ronald S. and Law, Jack D.},
abstractNote = {Cesium and strontium are extracted from aqueous acidic radioactive waste containing rare earth elements, technetium and actinides, by contacting the waste with a composition of a complex organoboron compound and polyethylene glycol in an organofluorine diluent mixture. In a preferred embodiment the complex organoboron compound is chlorinated cobalt dicarbollide, the polyethylene glycol has the formula RC.sub.6 H.sub.4 (OCH.sub.2 CH.sub.2).sub.n OH, and the organofluorine diluent is a mixture of bis-tetrafluoropropyl ether of diethylene glycol with at least one of bis-tetrafluoropropyl ether of ethylene glycol and bis-tetrafluoropropyl formal. The rare earths, technetium and the actinides (especially uranium, plutonium and americium), are extracted from the aqueous phase using a phosphine oxide in a hydrocarbon diluent, and reextracted from the resulting organic phase into an aqueous phase by using a suitable strip reagent.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2001},
month = {1}
}

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