کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9825430 | 1521788 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Separation of rare metal fission products in radioactive wastes in new directions of their utilization
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
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چکیده انگلیسی
An electrolytic extraction method has been studied to separate fission products (Ru, Rh, Pd, Tc, Se, Te, etc.) from the nuclear spent fuel. Yet they are rare metal fission products (RMFP), most are long-lived (LLFP; Pd, Tc, Se, Te). In the applied electrochemical separation process, Pd2+ cation itself would not only be easily deposited from various nitric acid solutions, but enhance also the deposition of RuNO3+ and ReO4â by acting as a catalyst (as Pdadatom). Such Catalytic Electrolytic Extraction (CEE) method was found to be applicable in the case of TcO4â deposition. The quaternary-, Pd-Ru-Rh-Re, deposit Pt electrodes showed the highest cathodic current corresponding to the hydrogen evolution reaction, ca. twice superior to that of the Pt electrode in artificial sea water as well as in alkaline solution. Adsorption / desorption behavior of 106Ru, etc. on the tertiary pyridine resin, being set as a pre-separation step to the CEE process, was newly confirmed by the reprocessing experiments with a highly irradiated fast reactor MOX fuel. The promising utilization of recovered RMFP will be a “FP-catalyst” for electrolytic hydrogen production, where they would be circulating material to bridge nuclear and hydrogen energy systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Nuclear Energy - Volume 47, Issues 1â4, 2005, Pages 462-471
Journal: Progress in Nuclear Energy - Volume 47, Issues 1â4, 2005, Pages 462-471
نویسندگان
Masaki Ozawa, Tatsuya Suzuki, Shinichi Koyama, Yasuhiko Fujii,