Leaching of selected heavy metals from electronic waste in the presence of the At. ferrooxidans bacteria

• Autorzy: Willner J.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper presents the experimental work carried out to evaluate the leaching efficiency of zinc, nickel and lead from printed circuit boards (PCBs) using biological leaching with different quantities of acidophilic bacteria as inoculum. Design/methodology/approach: Bioleaching was conducted using periodic method in Erlenmneyer flasks, with pure cultures of At. ferrooxidans. Some conditional parameters: oxidation-reduction potential, pH were taken into account. Findings: The results demonstrate that a greater quantity of inoculum conduces the extraction of metals from the solid into solution only in the initial stage of the bioleaching. 57% and 51% of the available Zn and Ni were leached from PCBs in the presence of At. ferrooxidans bacteria. No Pb was detected in the leachate during bioleaching. Research limitations/implications: Further research is needed to determine the influence of various conditions and parameters on activity of microorganisms and efficiency of metals bioleaching from waste materials. Practical implications: Presented study is a continuation of research conducted on the possibility of metals recovery from waste by biological methods. Originality/value: The paper could be an interesting source of information for researchers who apply bioleaching methods.

Słowa kluczowe

EN

bioleaching; acidithiobacillus ferrooxidans; PCBs

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2012
• Tom: Vol. 55, nr 2
• Strony: 860--863
• Opis fizyczny: Bibliogr. 19 poz., rys., tab.

Twórcy

autor

Willner J.

• Department of Metallurgy, Silesian University of Technology, ul. Krasińskiego 8, Katowice 40-019, Poland

Bibliografia

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