| Issue |
E3S Web Conf.
Volume 460, 2023
International Scientific Conference on Biotechnology and Food Technology (BFT-2023)
|
|
|---|---|---|
| Article Number | 09020 | |
| Number of page(s) | 9 | |
| Section | Agroecology and Sustainable Food Systems | |
| DOI | https://doi.org/10.1051/e3sconf/202346009020 | |
| Published online | 11 December 2023 | |
Recovery of non-ferrous metals from sulfide ores by the method of heap bioleaching on the example of Allarechensk technogenic deposit
1 Institute of North Industrial Ecology Problems – Separate subdivision of the Federal State Budgetary Institution of Science of the Federal Research Center «Kola Science Center», 184209, 14A, Akademgorodok, Apatity, Russian Federation
2 Federal State Budgetary Institution of Science South Urals Research Center of Mineralogy and Geoecology of the Urals Branch of the Russian Academy of Sciences, 456317, Miass, Ilmensky reserve territory, Russian Federation
3 Geological Institute – Separate subdivision of the Federal State Budgetary Institution of Science of the Federal Research Center «Kola Science Center», 184209, Fersmana st., 14 Apatity, Russian Federation
* Corresponding author: latyuk.es@gmail.com
On the example of the Allarechensk technogenic deposit ore, the heap bioleaching method feasibility for the copper-nickel ores processing and non-ferrous metals recovery was considered. The content of metals in the initial ore sample was following: nickel – 2.42 %, copper – 0.75 %. The ore grinded to a size of -5+3 mm was irrigated with a solution containing a strain of Acidithiobacillus ferrivorans. The S:L ratio was 4:1, the flow rate was 0.1 mL/min. In pregnant solutions, the pH and ORP values were controlled, and the concentrations of ferrous and ferric iron, copper, and nickel ions were also measured. The experiment duration was 330 days, 8.9 % nickel and 6.1 % copper were recovered. The pathways for the metals extraction from pregnant solutions, as well as the utilization of bioleaching residue were considered.
© The Authors, published by EDP Sciences, 2023
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