Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7893319 | Corrosion Science | 2018 | 21 Pages |
Abstract
The kinetics of silver dissolution in silver electrorefining process was investigated using a series of synthetic electrolytes and different electrode sizes. Kinetic models at corrosion potential and industrial range overpotentials were constructed as a function of electrolyte composition and temperature. The results revealed that overpotential of 150-200â¯mV vs. corrosion potential represented the values corresponding to the industrial silver electrolysis. In order to achieve a high current efficiency in silver electrorefining, our kinetic models suggest that concentration of HNO3 should be less than 5â¯g/dm3 or 3â¯g/dm3 for operation at 25â¯Â°C and 45â¯Â°C, respectively.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Arif T. Aji, Jari Aromaa, Benjamin P. Wilson, Udit S. Mohanty, Mari Lundström,