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Bioflotacja jako metoda alternatywna dla odsiarczania węgli, cz. 1
Języki publikacji
Abstrakty
Bioflotation might be developed as a new process for the removal of pyritic sulfur from fine coal. An application of bacteria to flotation would shorten the periods of the microbial removal of pyrite from some weeks by leaching methods to a few minutes. The bioflotation mechanism is based on rapid adhesion of bacterial cells with hydrophilic properties to the pyrite surface, which changes the properties of the mineral substance’s surface from hydrophobic to hydrophilic. As a consequence, air bubbles form aggregates only with hydrophobic coal particles, and pyrite falls to the bottom of the flotation chamber as waste. This article shows that the possibility of using bacteria in the flotation process in place of toxic chemicals has significant environmental and economical benefit.
Bioflotacja może być użyta jako proces usunięcia pirytu z węgla. Zaaplikowanie bakterii do flotacji z metodą ługowania skróciłoby okresy usuwania mikrobowego pirytu z kilku tygodni do kilku minut. Mechanizm bioflotacji bazuje na szybkim przyleganiu komórek bakterii o właściwościach hydrofilicznych do powierzchni pirytu, co zmieni cechy minerały z hydrofilicznych na hydrofobiczne. W konsekwencji powietrze wznosiłoby jedynie hydrofobiczne cząstki węgla, a piryt opadałby na dno komory flotacyjnej w postaci odpadu. Artykuł prezentuje możliwości użycia bakterii w procesie flotacji w miejsce toksycznych chemikaliów wraz z ich środowiskowymi i ekonomicznymi korzyściami.
Czasopismo
Rocznik
Tom
Strony
263--268
Opis fizyczny
Bibliogr. 38 poz., wykr.
Twórcy
autor
- Faculty of Mining and Geoengineering, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
autor
- Faculty of Mining and Geoengineering, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, Poland
Bibliografia
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- 30. Pecina E.T., Rodríguez M., Castillo P., Díaz V., Orrantia E., 2009. Effect of Leptospirillum ferrooxidans on the flotation kinetics of sulphide ores. Minerals Engineering, 22, 462-468
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- 34. Tan S.N., Chen M., 2012. Early stage adsorption behavior of Thiobacillus ferrooxidans on minerals I: an experimental approach. Hydrometallurgy, 119-120, 87-94
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- 36. Vilinska A., Hanumantha Rao K., 2008. Leptospirillum ferrooxidans sulphide mineral interactions with reference to bioflotation and bioflocculation. Transactions of Nonferrous Metals Society of China, 18, 1403-1409
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-656c7379-18d6-4ec8-8945-8ccf842edde9