S.M. Mousavi, S. Yaghmai
In this study, low-grade sphalerite has been treated by the bioleaching process using native cultures of Acidithiobacillus ferrooxidans and Sulfobacillus thermosulfido-oxidans in order to determine the ability of these bacteria to leach zinc. The effects of bacterial strain, pH, temperature, pulp density, iron precipitation, and initial concentration of ferric iron on zinc leaching were evaluated. The bioleaching experiments were carried out in shake flasks at pH 1.5, 180 rpm, 33 °C and 60 °C for mesophilic and thermophilic bacteria, respectively. Compared with the use of laboratory reference strains or control conditions, zinc recovery from the respective concentrate was greater when native isolates were employed. The experimental data show that the selection of the suitable pH and temperature during the bioleaching processes is crucial. The results indicate that an increase in pulp density generates a decrease in the dissolved zinc concentration. The maximum zinc extraction reached was 87% using the native thermophile S. thermosulfido-oxidans culture after 30 days.
@article{9af33727-9544-4d96-b2ba-ddc8461c7287,
title={Bacterial leaching of low grade ZnS conc},
author={S.M. Mousavi and S. Yaghmai},
year={2026},
language={en}
}TY - JOUR TI - Bacterial leaching of low grade ZnS conc AU - S.M. Mousavi AU - S. Yaghmai PY - 2026 LA - en ER -
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