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KMID : 0545119990090030265
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Journal of Microbiology and Biotechnology
1999 Volume.9 No. 3 p.265 ~ p.270
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Removal of Hydrogen Sulfide and Methylmercaptan Using Thiobacillus in a Three Phase Fluidized Bed Bioreactor
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Kim, Kyung Ran
Oh, Kwang Joong/Park, Kyung Yong/Kim, Dong Uk
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Abstract
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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^-1h^-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%.
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