Sequential distillation of fission-produced radioiodine and radioruthenium from sulfuric acid solutions

M. El-Absy; H. Aly; M. Mousa; M. Mostafa

doi:10.1023/b:jrnc.0000030951.39488.64

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 261: Issue 1

Sequential distillation of fission-produced radioiodine and radioruthenium from sulfuric acid solutions

Authors:

M. El-Absy

M. El-Absy Atomic Energy Authority Hot Laboratories Center P. O. Code No. 13759 Cairo Egypt

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H. Aly

H. Aly Atomic Energy Authority Hot Laboratories Center P. O. Code No. 13759 Cairo Egypt

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M. Mousa

M. Mousa Zagazig University Benha Branch Faculty of Science Benha Egypt

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M. Mostafa

M. Mostafa Zagazig University Benha Branch Faculty of Science Benha Egypt

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Pages:: 163–172

Online Publication Date:: 28 Oct 2004

Publication Date:: 01 Jul 2004

Article Category:: Research Article

DOI:: https://doi.org/10.1023/b:jrnc.0000030951.39488.64

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Abstract

Fission-produced ¹³¹I and ¹⁰³Ru radionuclides have been separated sequentially by distillation from H₂SO₄ of controlled chemical composition. The thermal-neutron irradiated uranium trioxide targets were digested in 2M NaOH solution and then, the supernatant solution was acidified to 20% H₂SO₄ with addition of a few drops of H₂O₂ solution. On boiling for 3.5 hours, ≥99.99%¹³¹I was volatilized, passed through 3M H₂SO₄ traps, and then collected in 0.1M NaOH + 0.01% Na₂S₂O₃ solution with a recovery yield of 73.6%. The product radionuclide had high radiochemical and radionuclidic purities. After separation of ¹³¹I, the fission-product solution was acidified to 40% H₂SO₄ acid containing KMnO₄ as an oxidant and boiled for 40 minutes. Ruthenium nuclides were volatilized and collected in 0.1M NaOH solution. Gamma-ray spectrometry showed that the separation and the recovery yields of ¹⁰³Ru were ≥99.99 and 65%, respectively, with ~92% radionuclidic purity, measured immediately after separation. The radionuclides of ¹³²I and ¹⁰⁶Rh were the main contaminants detected in the obtained ¹⁰³Ru product solution.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)