A Flow-Through Porous Electrode Model: Application to Metal-Ion Removal from Dilute Streams

James A. Trainham, John Newman

Research output: Contribution to journalArticle

116 Citations (Scopus)

Abstract

A one-dimensional model for flow-through porous electrodes operating above and below the limiting current of a metal deposition reaction has been developed. The model assumes that there is one primary reactant species in an excess of supporting electrolyte, and that a simultaneous side reaction may occur. The model predicts nonuniform reaction rates due to ohmic, mass-transfer, and heterogeneous kinetic limitations; the effects of axial diffusion and dispersion are included. Results are compared with the experimental data observed by various authors for the deposition of copper from sulfate solutions with the simultaneous generation of dissolved hydrogen. Satisfactory agreement between model predictions and experimental data on over-all reactor performance and deposit distributions has been accomplished. For an upstream counterelectrode, distributions of reaction rate (for both single and multiple reactions), concentration, and potential describe the detailed system behavior.

Original languageEnglish
Pages (from-to)1528-1540
Number of pages13
JournalJournal of the Electrochemical Society
Volume124
Issue number10
DOIs
Publication statusPublished - Oct 1977

Keywords

  • axial dispersion
  • current distribution
  • mass transfer
  • potential distribution
  • side reaction

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Renewable Energy, Sustainability and the Environment
  • Surfaces, Coatings and Films
  • Electrochemistry
  • Materials Chemistry

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