Hydrogen Sulfide Removal From Petroleum Refinery by ImmobilizedThiobacillus ferrooxidansin Fixed-bed Bioreactor

Abstract

In order to remove hydrogen sulfide from petroleum refinery, a fixedbed bioreactor was constructed by the immobilized Thiobacillus ferrooxidans (T.f ) with H-3 carrier. In the state of bioreactor operation, a maximum Fe 2C 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 ı 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 g/g.

A Novel Wireless Wearable Volatile Organic Compound (VOC) Monitoring Device with Disposable Sensors

“…Field tests at Mammoth Spring, Yellowstone National Park (WY, USA) were performed to validate the selectivity of the VOC device in an environment with high concentration of hydrogen sulfide, H 2 S. Since H 2 S does not belong to volatile organic compounds, although it is very common in some environmental scenarios such as petroleum refinery [22], H 2 S constitutes a major risk of interference for non-selective VOC monitors. To identify the existence of H 2 S, an air sample was collected and analyzed in a laboratory equipped with a GC-MS system (HP 5890 Gas Chromatograph interfaced to HP 5972 Mass Selective Detector Quadrupole Mass Spectrometer (Santa Clara, CA, USA) and with a Chromosil 330 column, Supelco, Sigma-Aldrich Co. (St. Louis, MO, USA).…”