Performance and electrochemical behavior of fluidized bed electrodes
The fluidized bed electrode was studied to characterize its behavior and evaluate its possible application to the electrowinning of precious metals and to the energy storage systems. Its performance and electrochemical behavior were analyzed in terms of various operating parameters. The first part of the study is concerned mainly with the overall performance of a fluidized-bed electrode for silver recovery from aqueous cyanide solution. The effects of applied current density, bed expansion, and electrode materials were considered, and its was found that the performance is free of operating problems and is superior to the Azadra-type cell, which is commonly used for precious metal recovery. The second part is concerned with the internal behavior of the fluidized bed electrode. The particle and electrolyte potentials and overpotentials in fluidized bed electrodes of two different types have been measured and analyzed by means of the probability density distribution and the power spectral density distribution. The resistance of such electrodes are also measured. The potential transients are observed to depend on current, bed expansion, and position in the bed (for copper particles) and each potential can be regarded as a time averaged value onto which two kinds of noise, low-frequency flicker noise and white noise, are added.
- Research Organization:
- California Univ., Berkeley (USA)
- OSTI ID:
- 5895805
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Electrical and electrochemical behavior of fluidized bed electrodes
Hydrodynamics and heat transfer in shallow fluidized beds