Projects per year
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 over-potentials were constructed as a function of electrolyte composition and temperature. The results revealed that overpotential of 150–200 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 5 g/dm3 or 3 g/dm3 for operation at 25 °C and 45 °C, respectively.
Original language | English |
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Pages (from-to) | 163-169 |
Number of pages | 7 |
Journal | Corrosion Science |
Volume | 138 |
DOIs | |
Publication status | Published - 1 Jul 2018 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Silver
- Kinetics
- Modelling studies
- Polarization
- Anodic dissolution
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Projects
- 2 Finished
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CMEco: Circular Metal Ecosystem
Aji, A., Kalliomäki, T., Seisko, S., Leikola, M., Jafari, S., Elomaa, H., Hamuyuni, J., Khalid, M. K., Lundström, M., Halli, P., Sinisalo, P., Wilson, B., Revitzer, H., Partinen, J. & Wang, Z.
01/01/2017 → 30/04/2019
Project: Business Finland: Other research funding
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RAMI: RawMatTERS Finland Infrastructure (RAMI)
01/01/2016 → 31/12/2018
Project: Academy of Finland: Other research funding
Equipment
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Raw Materials Research Infrastructure
Maarit Karppinen (Manager)
School of Chemical EngineeringFacility/equipment: Facility