Analytical Separation of Zirconium-95 and Niobium-95 from Uranium Irradiated by Thermal Neutrons


The presence of zirconium and niobium in nuclear spent fuel is undesirable, both because these metals interfere seriously with later Fuel reprocessing steps, and because of the high level of penetrating gamma radiation emitted by radioactive zirconium and its daughter niobium. In this thesis, after discussing the origin of the problem, methods For the separation of Fission products have been reviewed. An investigation was conducted into the ability of silica gel, in a medium of hydrochloric acid, to separate zirconium and niobium From an irradiated uranium sample and from 4 non-radioactive sample. Different procedures were then considered for the determination of zirconium and niobium; gamma ray detection, X-ray Fluorescence and a colorimetric method using Alizarin Red-S. Alizarin Red-S was not found suitable for this research due to the interference of niobium, so the other techniques mentioned above were used. The results are summarised in tables which show the percentage of each element in aqueous solution. From these results it is clear that, for certain specific column dimensions and Flow rates, using several concentrations of hydrochloric acid, it is possible to separate zirconium and niobium both From each other and from other Fission products. This method was not, however, found suitable For separation of other Fission products e.g. ruthenium, cerium

Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
Additional Information: Copyright © K .A AL-ZUBAIDI, 1980. K .A AL-ZUBAIDI asserts their moral right to be identified as the author of this thesis. This copy of the thesis has been supplied on condition that anyone who consults it is understood to recognise that its copyright rests with its author and that no quotation from the thesis and no information derived from it may be published without appropriate permission or acknowledgement. If you have discovered material in Aston Publications Explorer which is unlawful e.g. breaches copyright, (either yours or that of a third party) or any other law, including but not limited to those relating to patent, trademark, confidentiality, data protection, obscenity, defamation, libel, then please read our Takedown Policy and contact the service immediately.
Institution: Aston University
Uncontrolled Keywords: Analytical separation,Zirconium-95,niobium-95,uranium irradiated,thermal neutrons
Last Modified: 03 Jul 2024 08:07
Date Deposited: 11 Jan 2011 13:54
Completed Date: 1980
Authors: AL-Zubaidi, Kawther A.

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