Computational electrochemo-fluid dynamics modeling in a uranium electrowinning cell

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• 作者：K. R. Kim (1)
  S. Y. Choi (1)
  S. H. Kim (1)
  J. B. Shim (1)
  S. Paek (1)
  I. T. Kim (1)
  
• 关键词：Computational fluid dynamics (CFD) ; Electrochemo ; fluid dynamics ; Electrochemical system simulation ; Uranium electrowinning
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2014
• 出版时间：January 2014
• 年：2014
• 卷：299
• 期：1
• 页码：165-170
• 全文大小：875 KB
• 作者单位：K. R. Kim (1)
  S. Y. Choi (1)
  S. H. Kim (1)
  J. B. Shim (1)
  S. Paek (1)
  I. T. Kim (1)
  
  1. Korea Atomic Energy Research Institute, 1045 Daedeok-daero, Yuseong-gu, Taejon, 305-353, Korea
  
• ISSN：1588-2780

文摘

A computational electrochemo-fluid dynamics model has been developed to describe the electrowinning behavior in an electrolyte stream through a planar electrode cell system. Electrode reaction of the uranium electrowinning process from a molten-salt electrolyte stream was modeled to illustrate the details of the flow-assisted mass transport of ions to the cathode. This modeling approach makes it possible to represent variations of the convective diffusion limited current density by taking into account the concentration profile at the electrode surface as a function of the flow characteristics and applied current density in a commercially available computational fluid dynamics platform. It was possible to predict the conventional current–voltage relation in addition to details of electrolyte fluid dynamics and electrochemical variables, such as the flow field, species concentrations, potential, and current distributions throughout the galvanostatic electrolysis cell.