A. R. Shahverdi, M. T. Yazdi
The Mouteh refractory pyrite concentrates at pulp densities of 1.5%, 3%, 4.5% and 6% were treated using Thiobacillus ferrooxidans DSM 581 and the same bacteria adapted on the Mouteh pyritic concentrate. Compared with a non-adapted culture, the use of an adapted inoculum of T. ferrooxidans increased the bioleaching rate of iron by factors of 1.940, 2.011, 1.859, and 1.559 for pulp densities of 1.5%, 3%, 4.5%, and 6%, respectively. The lag phase time for growth of adapted cells decreased to less than 24 hours. Ore samples were analyzed for gold recovery by cyanide extraction before and after biooxidation in 4L and 20L bioreactors. When 55% of the sulfides were oxidized, the gold recovery upon subsequent cyanide extraction improved to more than 95%. Mathematical analysis of bioleaching data indicated that the X3 variable equation satisfactorily predicts gold recovery in relation to the oxidation degree of the pyrite concentrate.
@article{1b3c10b5-dc8b-4b15-af34-d00d71102051,
title={Biooxidation of Mouteh Refractory Gold B},
author={A. R. Shahverdi and M. T. Yazdi},
year={2026},
language={en}
}TY - JOUR TI - Biooxidation of Mouteh Refractory Gold B AU - A. R. Shahverdi AU - M. T. Yazdi PY - 2026 LA - en ER -
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