Kinetic study and modelling of silver dissolution in synthetic industrial silver electrolyte as a function of electrolyte composition and temperature

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

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 languageEnglish
Pages (from-to)163-169
Number of pages7
JournalCorrosion Science
Volume138
DOIs
Publication statusPublished - 1 Jul 2018
MoE publication typeA1 Journal article-refereed

Keywords

  • Silver
  • Kinetics
  • Modelling studies
  • Polarization
  • Anodic dissolution

Fingerprint Dive into the research topics of 'Kinetic study and modelling of silver dissolution in synthetic industrial silver electrolyte as a function of electrolyte composition and temperature'. Together they form a unique fingerprint.

  • Projects

    CMEco: Circular Metal Ecosystem

    Aji, A., Kalliomäki, T., Seisko, S., Leikola, M., Jafari, S., Peng, C., Agarwal, V., Elomaa, H., Hamuyuni, J., Khalid, M. K., Lundström, M., Halli, P., Sinisalo, P., Wilson, B., Revitzer, H., Partinen, J. & Wang, Z.

    01/01/201731/12/2019

    Project: Business Finland: Other research funding

    RAMI: RawMatTERS Finland Infrastructure (RAMI)

    Karppinen, M.

    01/01/201631/12/2018

    Project: Academy of Finland: Other research funding

    Equipment

  • Cite this