Title:
CESIUM AND STRONTIUM EXTRACTION USING A MIXED EXTRACTANT SOLVENT INCLUDING CROWN ETHER AND CALIXARENE EXTRACTANTS
Document Type and Number:
WIPO Patent Application WO2006016892
Kind Code:
A3
Abstract:
A mixed extractant solvent including calix[4]arene-bis-(tert-octylbenzo)-crown-6 ("BOBCalixC6"), 4',4',(5')-di-(t-butyldicyclo-hexano)-18-crown-6 ("DtBul8C6"), and at least one modifier dissolved in a diluent. The mixed extractant solvent may be used to remove cesium and strontium from an acidic solution. The DtBu18C6 may be present from approximately 0.01M to approximately 0.4M, such as from approximately 0.086 M to approximately 0.108 M. The modifier may be 1-(2,2,3,3- tetrafluoropropoxy)-3-(4-sec-butylphenoxy)-2-propanol ("Cs-7SB") and may be present from approximately 0.01M to approximately 0.8M. In one embodiment, the mixed extractant solvent includes approximately 0.15M DtBu18C6, approximately 0.007M BOBCalixC6, and approximately 0.75M Cs-7SB modifier dissolved in an isoparaffinic hydrocarbon diluent. The mixed extractant solvent may form an organic phase in an extraction system that also includes an aqueous phase. Methods of extracting cesium and strontium as well as strontium alone are also disclosed.
Inventors:
MEIKRANTZ DAVID H (US)
TODD TERRY A (US)
RIDDLE CATHERINE L (US)
LAW JACK D (US)
PETERMAN DEAN R (US)
MINCHER BRUCE J (US)
MCGRATH CHRISTOPHER A (US)
BAKER JOHN D (US)
TODD TERRY A (US)
RIDDLE CATHERINE L (US)
LAW JACK D (US)
PETERMAN DEAN R (US)
MINCHER BRUCE J (US)
MCGRATH CHRISTOPHER A (US)
BAKER JOHN D (US)
Application Number:
PCT/US2005/003534
Publication Date:
August 31, 2006
Filing Date:
January 28, 2005
Export Citation:
Assignee:
BECHTEL BWXT IDAHO LLC (US)
International Classes:
B01D11/00; C22B3/26; C22B26/00; C22B60/02; C23G5/00
Foreign References:
| US4749518A | 1988-06-07 | |||
| US6566561B1 | 2003-05-20 | |||
| US6709642B1 | 2004-03-23 |
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