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Removal of sulfur from Assam coal by bacterial conditioning and froth flotation
Author(s) -
Acharya Celin,
Rao Gedela V,
Twardoska Irena,
Kar Rabi N,
Sukla Lala B
Publication year - 1999
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199910)74:10<945::aid-jctb129>3.0.co;2-m
Subject(s) - pyrite , sulfur , thiobacillus ferrooxidans , thiobacillus , coal , leaching (pedology) , diesel fuel , chemistry , waste management , froth flotation , pulp and paper industry , metallurgy , environmental chemistry , environmental science , mineralogy , engineering , materials science , organic chemistry , soil science , soil water
Reduction of sulfur by bacterial leaching from a high sulfur‐bearing coal sample from Assam was attempted. Flotation of the sample with light diesel oil could not depress the pyrite and also the Thiobacillus ferrooxidans was found to be ineffective in leaching the sulfur from the flotation concentrate. Conditioning of the same coal sample with Thiobacillus ferrooxidans was found to assist in selectively depressing the pyrite, thereby reducing nearly 60% of the pyritic sulfur present in the sample. © 1999 Society of Chemical Industry