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2014 | 61 | 1 | 33-39
Article title

Biogenic catalysis in sulphide minerals' weathering processes and acid mine drainage genesis

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EN
Abstracts
EN
Bioleaching and biogenesis are the main outputs from a large group of environmental processes participating in the natural material cycle, used in raw materials processing. Bio-oxidation reactions are the main basis for bioleaching procedures, often participating in parallel leaching processes. During the leaching processes of polycomponent sulphide substrates, the factor of process selection also plays an important role, being in direct relation to the electric properties and galvanic effect occurring between the individual components of the leaching substrate. This work gives a summary of the results of a research focused on the possibilities of using biotechnological procedures for treatment of Slovak sulphide ores. The object of the research is extraction of valuable metals, undesirable admixtures and degradation of crystal lattice of sulphides for subsequent chemical leaching processing of precious metals. The results of experiments on the existence of biogenic processes in situ on waste dumps from exploitation containing residual sulphides are also presented. The processes result in acid mine drainage water generation. These waters are strongly mineralised (over 48 g/L) and of low pH; that is why they are very caustic. The arsenic content (2.558 mg/L) in outflowing waters from old mines is high and over the limits set by the law.
Publisher

Year
Volume
61
Issue
1
Pages
33-39
Physical description
Dates
published
2014
received
2013-10-15
revised
2013-12-06
accepted
2013-12-11
(unknown)
2014-01-22
Contributors
  • Institute of Geotechnics, Slovak Academy of Sciences, Kosice, Slovak Republic
  • Institute of Geotechnics, Slovak Academy of Sciences, Kosice, Slovak Republic
author
  • Institute of Chemistry and Inorganic Technology, Cracow University of Technology, Kraków, Poland
  • Institute of Chemistry and Inorganic Technology, Cracow University of Technology, Kraków, Poland
  • Institute of Chemistry and Inorganic Technology, Cracow University of Technology, Kraków, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-abpv61p33kz
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