Removal of sulfur from Assam coal by bacterial conditioning and froth flotation

✍ Scribed by Celin Acharya; Gedela V Rao; Irena Twardoska; Rabi N Kar; Lala B Sukla

• Publisher: Wiley (John Wiley & Sons)
• Year: 1999
• Tongue: English
• Weight: 130 KB
• Volume: 74
• Category: Article
• ISSN: 0268-2575
• DOI: 10.1002/(sici)1097-4660(199910)74:10<945::aid-jctb129>3.0.co;2-m

✦ Synopsis

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 ¯otation 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.