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otoukesh--mohammad
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Study on the Factors Affecting in the Thermal Decomposition of Ammonium Uranyl Carbonate (AUC) to Uranium Dioxide (UO2)
, M.Sc. Thesis Sharif University of Technology ; Otoukesh, Mohammad (Supervisor) ; khanchi, Alireza (Supervisor)
Abstract
According to the literature survey, the thermal decomposition of ammonium uranyl carbonate (AUC) is affected by different factors such as its purity and environmental conditions. Thermal treatment of this compound in the air atmosphere results in the production of at least three oxide forms of uranium (UO3, U3O8 and UO2) with different stoichiometric structure. The aim of this project was to study the effects of those parameters which play role in the decomposition of AUC and the production of UO2 compound in the presence of ammonia atmosphere. Therefore, an atmosphere control furnace was designed and constructed to establish the gas in the atmosphere of furnace chamber. On the other hand,...
Study on Pretreatment of the Uranous Effluents of the UCF & Natanz Plants by Using Supercritical Water Method
, M.Sc. Thesis Sharif University of Technology ; Otoukesh, Mohammad (Supervisor) ; Ahmadi, Javad (Co-Advisor)
Abstract
Pretreatment of nuclear waste for valuable and limited uranium resources in the nuclear industry as well as environmental protection is imperative. Wash the affected parts of the Natanz uranium enrichment plant uranium centrifuges with a standard cleaning solution of citric acid, a liquid waste is generated in this study, the preparation of these residues using supercritical water oxidation (SCWO) and near critical (HTWO1) was studied as a result, the optimum operating conditions, and conditions of solvent extraction has been studied. In the result, the optimum operating conditions, and conditions of solvent extraction has been introduced. Also in the UCF2 as a liquid waste contaminated with...