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Title: Methods of separating short half-life radionuclides from a mixture of radionuclides

Abstract

The present invention is a method of obtaining a radionuclide product selected from the group consisting of {sup 223}Ra and {sup 225}Ac, from a radionuclide ``cow`` of {sup 227}Ac or {sup 229}Th respectively. The method comprises the steps of (a) permitting ingrowth of at least one radionuclide daughter from said radionuclide ``cow`` forming an ingrown mixture; (b) insuring that the ingrown mixture is a nitric acid ingrown mixture; (c) passing the nitric acid ingrown mixture through a first nitrate form ion exchange column which permits separating the ``cow`` from at least one radionuclide daughter; (d) insuring that the at least one radionuclide daughter contains the radionuclide product; (e) passing the at least one radionuclide daughter through a second ion exchange column and separating the at least one radionuclide daughter from the radionuclide product and (f) recycling the at least one radionuclide daughter by adding it to the ``cow``. In one embodiment the radionuclide ``cow`` is the {sup 227}Ac, the at least one daughter radionuclide is a {sup 227}Th and the product radionuclide is the {sup 223}Ra and the first nitrate form ion exchange column passes the {sup 227}Ac and retains the {sup 227}Th. In another embodiment the radionuclide ``cow`` ismore » the {sup 229}Th, the at least one daughter radionuclide is a {sup 225}Ra and said product radionuclide is the {sup 225}Ac and the {sup 225}Ac and nitrate form ion exchange column retains the {sup 229}Th and passes the {sup 225}Ra/Ac. 8 figs.« less

Inventors:
;
Issue Date:
Research Org.:
Battelle Memorial Institute
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
672641
Patent Number(s):
5,809,394
Application Number:
PAN: 8-766,684; TRN: 99:001107
Assignee:
Battelle Memorial Inst., Richland, WA (United States) PTO; SCA: 400202; PA: EDB-98:120418; SN: 98002026832
DOE Contract Number:  
AC06-76RL01830
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 15 Sep 1998
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; ACTINIUM 225; RADIUM 223; ACTINIUM 227; THORIUM 229; ION EXCHANGE; EXTRACTION COLUMNS; DAUGHTER PRODUCTS; THORIUM 227; SEPARATION PROCESSES; RADIUM 225

Citation Formats

Bray, L.A., and Ryan, J.L. Methods of separating short half-life radionuclides from a mixture of radionuclides. United States: N. p., 1998. Web.
Bray, L.A., & Ryan, J.L. Methods of separating short half-life radionuclides from a mixture of radionuclides. United States.
Bray, L.A., and Ryan, J.L. Tue . "Methods of separating short half-life radionuclides from a mixture of radionuclides". United States.
@article{osti_672641,
title = {Methods of separating short half-life radionuclides from a mixture of radionuclides},
author = {Bray, L.A. and Ryan, J.L.},
abstractNote = {The present invention is a method of obtaining a radionuclide product selected from the group consisting of {sup 223}Ra and {sup 225}Ac, from a radionuclide ``cow`` of {sup 227}Ac or {sup 229}Th respectively. The method comprises the steps of (a) permitting ingrowth of at least one radionuclide daughter from said radionuclide ``cow`` forming an ingrown mixture; (b) insuring that the ingrown mixture is a nitric acid ingrown mixture; (c) passing the nitric acid ingrown mixture through a first nitrate form ion exchange column which permits separating the ``cow`` from at least one radionuclide daughter; (d) insuring that the at least one radionuclide daughter contains the radionuclide product; (e) passing the at least one radionuclide daughter through a second ion exchange column and separating the at least one radionuclide daughter from the radionuclide product and (f) recycling the at least one radionuclide daughter by adding it to the ``cow``. In one embodiment the radionuclide ``cow`` is the {sup 227}Ac, the at least one daughter radionuclide is a {sup 227}Th and the product radionuclide is the {sup 223}Ra and the first nitrate form ion exchange column passes the {sup 227}Ac and retains the {sup 227}Th. In another embodiment the radionuclide ``cow`` is the {sup 229}Th, the at least one daughter radionuclide is a {sup 225}Ra and said product radionuclide is the {sup 225}Ac and the {sup 225}Ac and nitrate form ion exchange column retains the {sup 229}Th and passes the {sup 225}Ra/Ac. 8 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {9}
}