Factors affecting bioleaching in the processing of non-metallics

Authors

  • Iveta Štyriaková Department of Biotechnology, Institute of Geotechnics of the Slovak Academy of Sciences, Watsonova 45, Košice, SK-043 53, Slovak Republic

DOI:

https://doi.org/10.36547/nbc.1353

Keywords:

bioleaching, non-metallics, iron, Bacillus sp.

Abstract

Biotechnological treatment of non-metallics is based on bacterial leaching of raw material and dissolution of Fe. Bacterial iron dissolution ability is dependent on various physicochemical factors as temperature, acidity of solutions, redox potential, rapidity of water circulation and presence of organic sources. The Fe content in the quartz sands and feldspar samples by the biological leaching decreased as much as 60% and by subsequent using of electromagnetic separation of feldspars, the decrease of Fe content in 74% was achieved. However, the application of magnetic separation of quartz sands after bioleaching resulted in total iron removal of 93% and in such combined way prepared product contained 0.024 % of Fe2O3. Achieved results on iron removal point to the fact that combination of leaching and magnetic separation enables to obtain product usable in glass and ceramic industry.

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Published

2022-01-13

How to Cite

Štyriaková, I. (2022). Factors affecting bioleaching in the processing of non-metallics. Nova Biotechnologica Et Chimica, 7(1), 11–16. https://doi.org/10.36547/nbc.1353

Issue

Vol. 7 No. 1 (2007)

Section

Research Articles

License

Copyright (c) 2022 Iveta Štyriaková

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