Hydrogen sulfide degradation characteristics of Bordetella sp. Sulf-8 in a biotrickling filter |
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Authors: | Grace M Nisola Enkhdul Tuuguu Danvir Mark D Farnazo Mideok Han Younghee Kim Eulsaeng Cho Wook-Jin Chung |
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Institution: | (1) Department of Environmental Engineering and Biotechnology, Energy and Environment Fusion Technology Center (E2FTC), Myongji University, San 38-2 Namdong, Cheoingu, Yongin City, Gyeonggi Province, 449-728, South Korea;(2) Division of Water and Environmental Strategy Research Group, Korea Environment Institute, 290 Jinheungno, Eunpyeong-Gu, Seoul, 122-706, South Korea; |
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Abstract: | The applicability of Bordetella sp. Sulf-8 to degrade Hydrogen Sulfide (H2S) gas in a biotrickling system was investigated. The isolate is a heterotrophic gram-negative, catalase- and oxidase-positive,
rod-shaped bacterium which can metabolize thiosulfate or sulfide into sulfate. The mesophilic Bordetella sp. Sulf-8 can grow within a wide pH range using yeast as carbon source, with or without the presence of sulfur. In batch
experiments, kinetic constants such as maximum specific growth rate (μ
max = 0.12 1/h), saturation constant (K
S = 0.017 g/L), and specific sulfur removal rate (88 mg S/g cells h) were obtained. In biotrickling experiments removal efficiencies
were satisfactory, but the system performance was observed to be more influenced by empty bed residence time than by H2S feed gas concentration. Critical and maximum elimination capacities were 78.0 and 94.5 g H2S/m3 day, respectively. Macrokinetic analysis of the biotrickling system revealed maximum H2S removal rate V
max = 15.97 g S/kg media-day and half saturation constant K
S′ = 12.45 ppmv. |
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Keywords: | |
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