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Biodesulphurization of Indian (Assam) coal using thiobacillus ferrooxidans (ATCC 13984)

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Author: Dastidar, Manisha G; Malik, Anushree; Roychoudhury, Pradip K

Advisor: Advisor

Date: 2000

Publisher:
Citation: Energy con

Series/Report no.:
Item Type: Article

Keywords: Indian coal; Pyrite; Biodesulphurization; Thiobacillus ferrooxidans

Abstract: The pyritic sulphur removal from coal and pyrite by Thiobacillus ferrooxidans was studied in a batch reactor. Microbial oxidation of ferrous iron to the ferric form, the central step in the biodesulphurization process was found to be affected by the substrate and product concentration. Direct microbial oxidation of pyrite was dominant during the exponential phase, while indirect electrochemical oxidation was observed at the stationary phase of the growth. The effect of various parameters, such as pulp density, ferrous and ferric iron concentrations on the rate of biodesulphurization was studied. The rate of pyritic sulphur removal was retarded at higher concentrations of ferrous and ferric iron.Therefore, during the process, the concentrations of Fe(II) and Fe(III) iron in the bioreaction mixture need to be controlled to maintain high rates of pyritic sulphur removal.
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Shankar B. Chavan
Computer Applications Division
Central Library, IIT Delhi
shankar.chavan@library.iitd.ac.in
NDLTD
Shodhganga
NDL
ePrints@IISc
etd@IISc
IR@IIT Bombay
NewsClips @IITD
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