Microbial desulphurization of coal containing pyritic sulphur in a continuously operated bench scale coal slurry reactor

摘要: Abstract Pre-combustion microbial desulphurization of coal containing total sulphur (3.90%) and pyritic (2.80%) has been evaluated in a slurry reactor. The reactor operated at hydraulic retention time (HRT) 96 h with pulp density 15 percent remove 79 76 ash an increase the calorific value from 4400 to 6800 kcal kg −1 load 1.9 kg kg MLSS d . treated yield is 72 percent. biochemical kinetic coefficients, viz. coefficient ( Y ) decay K system are 0.178 0.007 d , respectively, while maximum growth rate μ max half saturation constant s 0.025 h 0.220 g l as pyrite, respectively.