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Title: Development of a Novel Solvent for the Simultaneous Separation of Strontium and Cesium from Acidic Solutions

Abstract

A synergistic extraction solvent for the simultaneous removal of cesium and strontium from acidic solutions has been investigated. The extraction solvent consists of, 4,4',(5')-di-(t-butyldicyclo-hexano)-18-crown-6 (DtBuCH18C6), calix[4]arene-bis-(tert-octylbenzo-crown-6) (BOBCalixC6), and 1-(2,2,3,3-tetrafluoropropoxy)-3-(4-sec-butylphenoxy)-2-propanol (Cs-7SB modifier) in a branched aliphatic kerosene (Isopar® L). Extraction synergy for strontium was observed when DtBuCH18C6 was combined with the BOBCalixC6 cesium extractant solvent and Cs-7SB modifier or if the Cs-7SB modifier was substituted into the SREX (Strontium Extraction) solvent in place of TBP. The novel process extracted both cesium and strontium simultaneously from 1 M nitric acid solutions with distribution ratios of 8.8 and 7.7 for strontium and cesium, respectively, at ambient temperature. Distribution coefficients for cesium and strontium as a function of nitric acid concentration and temperature were also obtained with 0.5 M<[HNO3]<2.5 M giving favorable distribution ratios. This new process utilizing the combined solvent has been named the Fission Product Extraction Process (FPEX).

Authors:
; ; ; ; ; ; ;
Publication Date:
Research Org.:
Idaho National Laboratory (INL)
Sponsoring Org.:
DOE - NE
OSTI Identifier:
912283
Report Number(s):
INEEL/JOU-04-01934
Journal ID: ISSN 0736-6299; SEIEDB; TRN: US0800346
DOE Contract Number:  
DE-AC07-99ID-13727
Resource Type:
Journal Article
Journal Name:
Solvent Extraction and Ion Exchange
Additional Journal Information:
Journal Volume: 23; Journal Issue: 3; Journal ID: ISSN 0736-6299
Country of Publication:
United States
Language:
English
Subject:
11 - NUCLEAR FUEL CYCLE AND FUEL MATERIALS; AMBIENT TEMPERATURE; CESIUM; DISTRIBUTION; FISSION PRODUCTS; KEROSENE; NITRIC ACID; REMOVAL; SOLVENTS; STRONTIUM; Calixarene; cesium; crown ether; FPEX; strontium

Citation Formats

Riddle, Catherine L, Baker, John D, Law, Jack D, McGrath, Christopher A, Meikrantz, David H, Mincher, Bruce J, Peterman, Dean R, and Todd, Terry A. Development of a Novel Solvent for the Simultaneous Separation of Strontium and Cesium from Acidic Solutions. United States: N. p., 2005. Web. doi:10.1081/SEI-200058035.
Riddle, Catherine L, Baker, John D, Law, Jack D, McGrath, Christopher A, Meikrantz, David H, Mincher, Bruce J, Peterman, Dean R, & Todd, Terry A. Development of a Novel Solvent for the Simultaneous Separation of Strontium and Cesium from Acidic Solutions. United States. doi:10.1081/SEI-200058035.
Riddle, Catherine L, Baker, John D, Law, Jack D, McGrath, Christopher A, Meikrantz, David H, Mincher, Bruce J, Peterman, Dean R, and Todd, Terry A. Tue . "Development of a Novel Solvent for the Simultaneous Separation of Strontium and Cesium from Acidic Solutions". United States. doi:10.1081/SEI-200058035.
@article{osti_912283,
title = {Development of a Novel Solvent for the Simultaneous Separation of Strontium and Cesium from Acidic Solutions},
author = {Riddle, Catherine L and Baker, John D and Law, Jack D and McGrath, Christopher A and Meikrantz, David H and Mincher, Bruce J and Peterman, Dean R and Todd, Terry A},
abstractNote = {A synergistic extraction solvent for the simultaneous removal of cesium and strontium from acidic solutions has been investigated. The extraction solvent consists of, 4,4',(5')-di-(t-butyldicyclo-hexano)-18-crown-6 (DtBuCH18C6), calix[4]arene-bis-(tert-octylbenzo-crown-6) (BOBCalixC6), and 1-(2,2,3,3-tetrafluoropropoxy)-3-(4-sec-butylphenoxy)-2-propanol (Cs-7SB modifier) in a branched aliphatic kerosene (Isopar® L). Extraction synergy for strontium was observed when DtBuCH18C6 was combined with the BOBCalixC6 cesium extractant solvent and Cs-7SB modifier or if the Cs-7SB modifier was substituted into the SREX (Strontium Extraction) solvent in place of TBP. The novel process extracted both cesium and strontium simultaneously from 1 M nitric acid solutions with distribution ratios of 8.8 and 7.7 for strontium and cesium, respectively, at ambient temperature. Distribution coefficients for cesium and strontium as a function of nitric acid concentration and temperature were also obtained with 0.5 M<[HNO3]<2.5 M giving favorable distribution ratios. This new process utilizing the combined solvent has been named the Fission Product Extraction Process (FPEX).},
doi = {10.1081/SEI-200058035},
journal = {Solvent Extraction and Ion Exchange},
issn = {0736-6299},
number = 3,
volume = 23,
place = {United States},
year = {2005},
month = {3}
}