Removal of Hydrogen Sulfide and Methylmercaptan Using Thiobacillus in a Three Phase Fluidized Bed Bioreactor

  • KIM, KYUNG-RAN (Department of Environmental Engineering, Pusan National University) ;
  • KWANG-JOONG OH (Department of Environmental Engineering, Pusan National University) ;
  • KYUNG-YONG PARK (Department of Chemical Engineering, Inje University) ;
  • DONGUK KIM (Department of Chemical Engineering, Inje University)
  • Published : 1999.06.01

Abstract

A three phase fluidized bed bioreactor immobilized with Thiobacillus sp. IW was tested to remove hydrogen sulfide and methylmercaptan with high loading rate. In a single gas treatment, the bioreactor removed 92- 98% of hydrogen sulfide with loading rate of 15- 66 g/l/h and removed 87-98% of methylmercaptan with loading rate of 14-60 gl/sup -1/h/sup -1/. In the mixed gas treatment, the removal efficiencies of hydrogen sulfide and methylmercaptan maintained at 89-99% for various inlet loading rates and were not affected by the inlet loading ratio of both gases in low loading rates. When the inlet concentration of methylmercaptan increased 3.8 times and was maintained for 30 h to observe the response of the bioreactor to sudden environmental change, the removal efficiency of methylmercaptan was maintained at an average of 91%.

Keywords

References

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