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Different strains of thiobacillus ferrooxidans and thiobacillus thiooxidans were used to catalyze the oxidative dissolution of iron pyrite, fes2, in nine different coal samples.Kinetic variables and parametric factors that were determined to have a pronounced effect on the rate and extent of oxidative dissolution at a fixed po2 were the bacterial strain, the nitrogenphosphorus molar ratio.
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