Influence Of Used Bacterial Culture On Zinc And Aluminium Bioleaching From Printed Circuit Boards

Authors

  • ANNA MRAZIKOVA
  • RENATA MARCINCAKOVA
  • JANA KADUKOVA
  • OKSANA VELGOSOVA
  • MAGDALENA BALINTOVA

DOI:

https://doi.org/10.1515/nbec-2015-0013

Keywords:

bioleaching, electronic waste, zinc, aluminium, Acidithiobacillus ferrooxidans, Acidithiobacillus thiooxidans

Abstract

Bioleaching processes were used to solubilize metals (Cu, Ni, Zn and Al) from printed circuit boards (PCBs). In this study, a PCBs-adapted pure culture of Acidithiobacillus ferrooxidans, pure culture of Acidithiobacillus thiooxidans and PCBs-adapted mixed culture of A. ferrooxidans and A. thiooxidans were used for recovery of the metals. The study showed that the mixed bacterial culture has the greatest potential to dissolve metals. The maximum metal bioleaching efficiencies were found to be 100, 92, 89 and 20% of Cu, Ni, Zn and Al, respectively. The mixed culture revealed higher bacterial stability. The main factor responsible for high metal recovery was the ability of the mixed culture to maintain the low pH during the whole process. The pure culture of A. thiooxidans had no significant effect on metal bioleaching from PCBs.

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How to Cite

MRAZIKOVA, A. ., MARCINCAKOVA, R. ., KADUKOVA, J. ., VELGOSOVA, O. ., & BALINTOVA, M. . (2015). Influence Of Used Bacterial Culture On Zinc And Aluminium Bioleaching From Printed Circuit Boards. Nova Biotechnologica Et Chimica, 14(1), 45–51. https://doi.org/10.1515/nbec-2015-0013

Issue

Vol. 14 No. 1 (2015)

Section

Research Articles

License

All papers published in the Nova Biotechnologica et Chimica (NBC)  are published under a CC-BY licence (CC-BY 4.0). Published materials can be shared (copy and redistribute the material in any medium or format) and adapted (remix, transform, and build upon the material for any purpose, even commercially) with specifying the author(s).