Chemical Review and Letters

Removal of Cadmium in the Cold Purification Step by Semi-batch Process

Document Type : Research Article

Authors

Pourya Abbasi 1
Keivan Shayesteh 2
Vahid Vahidfard 1
Hossein Jangara 1

1 Chemical Engineering Department, University of Mohaghegh Ardabili, Ardabil, Iran

2 Depatment of Chemical Engineering- University of Mohaghegh Ardabili- Ardabil- Iran

https://doi.org/10.22034/crl.2023.408052.1234
Abstract
Since the presence of cadmium ions in the zinc production process causes many problems, removing this impurity is necessary at the cold purification stage. This study considers cadmium removal in the cold purification process of the Dandi zinc smelting plant (Zanjan-Iran). To this end, the cadmium cementation was conducted by using zinc dust in the leached solution of the Dandi zinc smelting plant and the synthetic solution. Furthermore, modeling of the system is performed to predict the behavior of cadmium removal. Therefore, cadmium cementation kinetic was studied at different temperatures, and the reaction rate constants were obtained. Then, the governing differential equation of cadmium removal was solved analytically. Finally, verify the model, the outcomes obtained from modeling were compared with the experimental data. Results showed that the mathematical modeling outcomes agree with the experimental data.

Keywords

Cadmium cementation
Cold purification
Modeling
Reaction kinetic
Zinc dust

Subjects

Chemical Review and Letters
Volume 6, Issue 4 - Serial Number 4
Autumn 2023
Pages 449-460

  • Receive Date 21 July 2023
  • Revise Date 22 December 2023
  • Accept Date 27 December 2023

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