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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/17449

    Title: Process kinetics of an expanded granular sludge bed reactor treating sulfate-containing wastewater
    Authors: 周信賢
    Keywords: Expanded granular sludge bed;COD/SO4 2− ratio;Growth-limiting;Sulfate reducers;Methanogens;Kinetics
    Date: 2011-05
    Issue Date: 2012-09-10 14:36:33 (UTC+8)
    Abstract: A laboratory study using expanded granular sludge bed (EGSB) reactors was undertaken to explore the kinetic behavior of sulfate reducers and methanogens in treating sulfate-containing wastewater. A kinetic model was also formulated in a way that accounted for mass fractions of sulfate reducers and methanogens (fSR, fM) and an inhibiting effect of unionizedH2S on microbial groups. When the EGSB reactor was maintained at the influent COD/SO4 2− ratio of 0.5 (i.e., acetate was growth-limiting and sulfate was in excess), sulfate reducers kinetically prevailed for acetate over methanogens. In contrast, when the EGSB reactor was maintained at the influent COD/SO4 2− ratio of 0.8–3.0 (i.e., acetate was in excess and sulfate was growth-limiting), methanogens can utilize the excess acetate and may prevail over sulfate reducers. The values of fSR, fM evaluated at the influent COD/SO4 2− ratio of 0.5–3.0 and the obtained kinetic parameter values of sulfate reducers and methanogens (kSR, KI,SR, Ksa, Ks,SR; kM, KI,M, Ks,M) together with the validated kinetic model are of help in predicting the performance of the EGSB reactor treating sulfate-containing wastewater.
    Relation: Chemical Engineering Journal, 170(1), 233-240
    Appears in Collections:[環境工程系所] 期刊論文

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