Hydrogen Sulfide Removal From Petroleum Refinery by Immobilized Thiobacillus ferrooxidans in Fixed-bed Bioreactor

In order to remove hydrogen sulfide from petroleum refinery, a fixed-bed bioreactor was constructed by the immobilized Thiobacillus ferrooxidans (T.f) with H-3 carrier. In the state of bioreactor operation, a maximum Fe(2+) oxidation of 7.24 g/L.h was attained with the aeration of 300 L/h, the dilution rate of 0.6 h(-1), the pH of 2.0, and the temperature of 30 degrees C. And the complex compound forming on the surface of the carrier in the operation of bioreactor was identified as jarosite by chemical analysis and X-ray diffraction analysis. In the fixed-bed bioreactor, the removal of hydrogen sulfide was higher than 99.12%, and the content of H(2)S in the exhaust was less than 10 mu g/g.