Comparison Analysis of Coal Biodesulfurization and Coal’s Pyrite Bioleaching with Acidithiobacillus ferrooxidans

Figure 3

SEM micrographs of biodesulfurization of coal (a1) after 0 day, (a2) after 6 days and (a3) sterile control; bioleaching coal’s pyrite (b1) after 0 day, (b2) after 24 days, and (b3) sterile control after 24 days.