Bioleaching of pollymetallic sulphide concentrate using thermophilic bacteria | Zendy

Milovan Vuković | Zendy; Nada Štrbac | Zendy; Miroslav Sokić | Zendy; Vesna Grekulović | Zendy; Vladimir Cvetkovski | Zendy

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Bioleaching of pollymetallic sulphide concentrate using thermophilic bacteria

Author(s) -

Milovan Vuković,

Nada Štrbac,

Miroslav Sokić,

Vesna Grekulović,

Vladimir Cvetkovski

Publication year - 2013

Publication title -

hemijska industrija

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.147

H-Index - 19

eISSN - 2217-7426

pISSN - 0367-598X

DOI - 10.2298/hemind130905087v

Subject(s) - bioleaching , thermophile , chemistry , brine , zinc , copper , sulfur , copper extraction techniques , leaching (pedology) , residue (chemistry) , metallurgy , metal , nuclear chemistry , materials science , environmental science , biochemistry , organic chemistry , soil science , soil water , enzyme

An extreme thermophilic, iron-sulphur oxidising bacterial culture was isolated and adapted to tolerate high metal and solids concentrations at 70°C. Following isolation and adaptation, the culture was used in a batch bioleach test employing a 5-l glass standard magnetic agitated and aerated reactor, for the bioleaching of a copper-lead-zinc collective concentrate. The culture exhibited stable leach performance over the period of leach operation and overall copper and zinc extractions higher than 97%. Lead sulphide is transformed into lead sulphate remaining in the bioleach residue due to the low solubility in sulphate media. Brine leaching of bioleach residue yields 95% lead extraction. [Projekat Ministarstva nauke Republike Srbije, br. 34023

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