Biodestruction and deferritization of quartz sands by Bacillus species.

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F03%3A50033035" target="_blank" >RIV/61388980:_____/03:50033035 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Biodestruction and deferritization of quartz sands by Bacillus species.
Original language description
Quartz sand containing mineral impurities was subjected to bioleaching with Bacillus spp. strains and subsequent elutriation. Bioleaching of the sample removed visible Fe-bearing minerals that coated quartz grains. During the bioleaching, elements were dissolved from silicate minerals. Poorly crystalline Fe-oxides that sealed siderite nodules were released from intergranular spaces and formed a fine-grained (<0.1 mm) fraction. Voltammetry of the fine-grained fraction indicated reductive dissolution of Fe3+. However, chemical analysis showed a slight increase in Fe2O3 content and a decrease in the FeO content following three months bioleaching in the Bacillus culture. X-ray diffraction analyses showed the loss of Fe-bearing minerals and mica following the bioleaching and the elutriation of the fine-grained fraction. Transmission electron microscopy and energy-dispersive analysis of X-rays showed nucleation of fine-grained Fe,Al-silicates on bacterial surface after three months of biolea
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CA - Inorganic chemistry
OECD FORD branch
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Publication year
2003
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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