Study on Pretreatment of the Uranous Effluents of the UCF & Natanz Plants by Using Supercritical Water Method

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Salimi, Ali Akbar | 2013

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 44573 (46)
University: Sharif University of Technology
Department: Energy Engineering
Advisor(s): Otoukesh, Mohammad; Ahmadi, Javad
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 organic substances, which are organic compounds that prevent uranium mining, preparation of critical and near-critical water oxidation method has been introduced optimal operating conditions, and the solvent extraction. In this paper, a method for reducing the amount of uranium present in the waste to less than 2ppm U has been introduced
Keywords:
Oranium ; Solvent Extraction ; Nuclear Waste ; Centrifuges ; Supercritical Water Oxidation (SCWO) ; High Temperature Water Oxidation (HTWO)