Application of Acidithiobacillus Ferrooxidans in Coal Flotation

Bioflotation is a potential method for removing pyritic sulphur from coal. Sodium cyanide is a well-known depressant for pyrite in flotation of sulphide minerals; however, for coal this reagent is unacceptable from the environmental point of view. This study investigates an alternate to sodium cyani...

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Bibliographic Details
Published in:International journal of coal preparation and utilization 2009-12, Vol.29 (6), p.279-288
Main Authors: Amini, E., Hosseini, T. R., Oliazadeh, M., Kolahdoozan, M.
Format: Article
Language:English
Subjects:
Acidithiobacillus Ferrooxidans
Applied sciences
Bioflotation
Coal
Coal and derived products
Energy
Exact sciences and technology
Ferrites
Flotation
Fuels
Mechanical preparation
Modelling
Processing
Sodium cyanide
Sulfur
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Summary:Bioflotation is a potential method for removing pyritic sulphur from coal. Sodium cyanide is a well-known depressant for pyrite in flotation of sulphide minerals; however, for coal this reagent is unacceptable from the environmental point of view. This study investigates an alternate to sodium cyanide; Acidithiobacillus Ferrooxidans, a nonharmful bacterial reagent as a pyrite depressant. The flotation behavior of pyrite and other gangue particles using the sodium cyanide and the Ferrooxidans is compared by applying the general first-order flotation model. The kinetic parameters extracted from the model demonstrated that the modified flotation rate of pyrite was reduced, and the selectivity between coal and gangue was improved using the bacteria. These results indicate that Acidithiobacillus Ferrooxidans has potential in removing pyritic sulfur from coal.
ISSN:1939-2699
1939-2702
DOI:10.1080/19392690903558314