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Heavy metal immobilisation by indigenous microorganisms during tailings sample bioleaching

Author(s): Zyan Piervandi

Bioleaching is a method in mining and bio hydrometallurgy that extracts valuable metals from an inferior ore with the assistance of microorganisms like bacterium or archaea. Metals extracted from bioleaching include: Gold, Copper, Silver, Cobalt, Uranium, Zinc, and Nickel. Bioleaching is accustomed partly replace the intensive crushing and grinding that interprets to prohibitory price and energy consumption during a typical method. These microorganisms really gain energy by breaking down minerals into their constituent parts. Because the bacterium breeds within the conditions of the mine, they're simply cultivated and recycled. Bioleaching is the process of releasing toxic elements from sulfide tailings into the aquatic environments. In this research, the reduction of heavy metals mobility through the formation of passivation layer was studied in lab-scale reactors during tailings bioleaching by the pure cultures of Acidithiobacillusferrooxidans.

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