کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1740317 1521752 2016 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extraction kinetics of ruthenium in the mixture of tri-n-butyl phosphate and n-dodecane
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Extraction kinetics of ruthenium in the mixture of tri-n-butyl phosphate and n-dodecane
چکیده انگلیسی


• A comprehensive model is developed to describe the extraction kinetics of Ru in TBP.
• Rate–constant and mass transfer coefficient determined experimentally and their correlation derived.
• Extraction of Ru into TBP-dodecane mixture is an interfacial reaction.
• Overall extraction kinetics is both kinetic and diffusion controlled.
• Short residence time contactor may improve decontamination of U and Pu from Ru.

The extraction kinetics of ruthenium in the mixture of tri-n-butyl phosphate and n-dodecane has been investigated experimentally, using a constant interfacial area stirred cell. Effect of stirring speed, temperature, specific interfacial area and concentrations of reactant and nitric acid on the extraction rate of ruthenium were studied to identify the reaction location, extraction reaction regime and also to determine the intrinsic rate constant of the reaction and mass transfer coefficients. A systematic approach was adopted for the determination of rate parameters. Based on experimental results it is concluded that the reaction with the extractant takes place at interface and the overall rate is controlled by both the intrinsic kinetics and the mass transfer of the species involved.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Nuclear Energy - Volume 86, January 2016, Pages 50–62
نویسندگان
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