Method of separation of yttrium-90 from strontium-90
Abstract
A method for purifying Y-90 from a Sr-90/Y-90 "cow" wherein raw Sr-90/Y-90 source containing impurities is obtained from nuclear material reprocessing. Raw Sr-90/Y-90 source is purified to a fresh Sr-90/Y-90 source "cow" by removing impurities by addition of sodium hydroxide and by removing Cs-137 by further addition of sodium carbonate. The "cow" is set aside to allow ingrowth. An HDEHP organic extractant is obtained from a commercial supplier and further purified by saturation with Cu(II), precipitation with acetone, and washing with nitric acid. The "cow" is then dissolved in nitric acid and the purified HDEHP is washed with nitric acid and scrubbed with either nitric or hydrochloric acid. The dissolved "cow" and scrubbed HDEHP are combined in an organic extraction, separating Y-90 from Sr-90, resulting in a Sr-90/Y-90 concentration ratio of not more than 10(E-7), and a metal impurity concentration of not more than 10 ppm per curie of Y-90. The separated Y-90 may then be prepared for delivery.
- Inventors:
-
- Richland, WA
- Issue Date:
- Research Org.:
- Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
- OSTI Identifier:
- 870395
- Patent Number(s):
- 5512256
- Assignee:
- Battelle Memorial Institute (Richland, WA)
- Patent Classifications (CPCs):
-
A - HUMAN NECESSITIES A61 - MEDICAL OR VETERINARY SCIENCE A61K - PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
G - PHYSICS G21 - NUCLEAR PHYSICS G21G - CONVERSION OF CHEMICAL ELEMENTS
- DOE Contract Number:
- AC06-76RL01830
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; separation; yttrium-90; strontium-90; purifying; y-90; sr-90; cow; raw; source; containing; impurities; obtained; nuclear; material; reprocessing; purified; fresh; removing; addition; sodium; hydroxide; cs-137; carbonate; set; aside; allow; ingrowth; hdehp; organic; extractant; commercial; supplier; saturation; cu; ii; precipitation; acetone; washing; nitric; acid; dissolved; washed; scrubbed; hydrochloric; combined; extraction; separating; resulting; concentration; ratio; 10; e-7; metal; impurity; ppm; curie; separated; prepared; delivery; concentration ratio; impurity concentration; removing impurities; sodium hydroxide; hydrochloric acid; sodium carbonate; nitric acid; organic extractant; nuclear material; source containing; y-90 source; organic extraction; raw sr-90; containing impurities; /423/
Citation Formats
Bray, Lane A, and Wester, Dennis W. Method of separation of yttrium-90 from strontium-90. United States: N. p., 1996.
Web.
Bray, Lane A, & Wester, Dennis W. Method of separation of yttrium-90 from strontium-90. United States.
Bray, Lane A, and Wester, Dennis W. Mon .
"Method of separation of yttrium-90 from strontium-90". United States. https://www.osti.gov/servlets/purl/870395.
@article{osti_870395,
title = {Method of separation of yttrium-90 from strontium-90},
author = {Bray, Lane A and Wester, Dennis W},
abstractNote = {A method for purifying Y-90 from a Sr-90/Y-90 "cow" wherein raw Sr-90/Y-90 source containing impurities is obtained from nuclear material reprocessing. Raw Sr-90/Y-90 source is purified to a fresh Sr-90/Y-90 source "cow" by removing impurities by addition of sodium hydroxide and by removing Cs-137 by further addition of sodium carbonate. The "cow" is set aside to allow ingrowth. An HDEHP organic extractant is obtained from a commercial supplier and further purified by saturation with Cu(II), precipitation with acetone, and washing with nitric acid. The "cow" is then dissolved in nitric acid and the purified HDEHP is washed with nitric acid and scrubbed with either nitric or hydrochloric acid. The dissolved "cow" and scrubbed HDEHP are combined in an organic extraction, separating Y-90 from Sr-90, resulting in a Sr-90/Y-90 concentration ratio of not more than 10(E-7), and a metal impurity concentration of not more than 10 ppm per curie of Y-90. The separated Y-90 may then be prepared for delivery.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1996},
month = {Mon Jan 01 00:00:00 EST 1996}
}
Works referenced in this record:
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journal, January 1990
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Purification of di-(2-ethylhexyl)phosphoric acid by precipitation of copper(II) di-(2-ethylhexyl)phosphate
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