Microbial Biodesulphurisation of Coal

6.1 Introduction 6.2 Coal Reserves and Production 6.2.1 Global Coal Scenario 6.2.1.1 Coal Production 6.2.2 Coal Reserves in India 6.2.2.1 Coal Production in India 6.2.2.2 Categorisation of Coal in India 6.2.2.3 Grades of Coal in India 6.3 High Sulphur Coal 6.3.1 Chemistry of Sulphur in Coal 6.3.1.1 Sulphur in Coal: A Worldwide Problem 6.3.1.2 Sulphur Content in Indian Coal 6.3.1.3 Need for Desulphurisation 6.4 Desulphurisation Processes 6.4.1 Physical Methods of Desulphurisation 6.4.2 Chemical Methods of Desulphurisation 6.4.3 Bio-Desulphurisation and Microorganisms 6.4.3.1 Bio-Removal of Pyritic Sulphur 6.4.3.2 Bio-Desulphurisation of Organic Sulphur 6.4.3.3 Mechanisms of Organic Sulphur Removal 6.5 Future Research Directions Reference