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Kinetics Study on the Leaching of Metallic Silver with Ammonium Carbonate as an Eco-Friendly Alternative for Cyanide

SALIH AYDOGAN, MOHAMED TAHA OSMAN ABDELRAHEEM

2012enleachingsilverammonium carbonatecyanidekinetics

Abstract

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This article describes the dissolution kinetics of metallic silver (Ag) in ammonium carbonate and hydrogen peroxide (H2O2) solution. The influences of temperature, rotation speed, H2O2 concentration, and ammonium carbonate concentration were investigated. The results indicate that ammonium carbonate concentrations between 0.025 and 0.1 M have a significant impact on the dissolution rate. The dissolution rate is positively impacted by H2O2 concentrations between 0.025 M and 0.10 M. Furthermore, there is a positive relationship between the dissolution rate of Ag and the rotation speed. Silver dissolves more readily at temperatures between 20 °C and 55 °C. However, a temperature greater than 40 °C led to the formation of a silver carbonate layer on the disc when using high concentrations of hydrogen peroxide and ammonium carbonate. The activation energy of 11.10 kJ/mol was calculated, supporting the validity of the Levich equation, which is predicated on the suggestion that mass transfer control describes the extraction rate.

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Cite This Work

@article{6fef5730-df07-45e1-b58e-6cc684f4af2b,
  title={Kinetics Study on the Leaching of Metallic Silver with Ammonium Carbonate as an Eco-Friendly Alternative for Cyanide},
  author={SALIH AYDOGAN and MOHAMED TAHA OSMAN ABDELRAHEEM},
  year={2012},
  language={en}
}
TY  - JOUR
TI  - Kinetics Study on the Leaching of Metallic Silver with Ammonium Carbonate as an Eco-Friendly Alternative for Cyanide
AU  - SALIH AYDOGAN
AU  - MOHAMED TAHA OSMAN ABDELRAHEEM
PY  - 2012
LA  - en
ER  -

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