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    Please use this identifier to cite or link to this item: http://ir.lib.ksu.edu.tw/handle/987654321/5887

    Title: Comparative kinetic behavior of nitrifiers with different growth environments
    Authors: Charng-Gwo Jih
    Ju-Sheng Huang (黃汝賢)
    Huei-Jen Lin
    Hsin-Hsien Chou
    Keywords: Nitrification
    Sluggish phenomenon
    Growth environment
    Specific oxygen utilization rate
    Date: 2007
    Issue Date: 2009-11-20 12:08:29 (UTC+8)
    Abstract: A batch feed study using nitrifiers that had been continuously acclimated under a low-ammonia environment showed that a sudden
    change of ammonia concentration resulted in sluggish physiological adaptation and biochemical reaction of nitrifiers (i.e., indicated by
    the parameter specific oxygen utilization rate). When the one-stage continuous-stirred tank reactor (CSTR) system was maintained at a
    short microbial cell residence time and a high volumetric loading rate, an accumulation of nitrite occurred. Under such circumstances,
    ammonia and nitrite oxidation both limit overall nitrification at different stages of the process. Batch studies with biomass respectively
    removed from the front and rear reactors (i.e., high-ammonia and low-ammonia growth environments) of a two-stage CSTR system
    showed that the estimated kinetic parameters for nitrifiers with the low-ammonia growth environment were 0.3–0.8-fold lower than those
    for nitrifiers with the high-ammonia growth environment, possibly leading to inaccurate model simulation results. Accordingly, biomass
    removed from a CSTR system that had been operated continuously to grow bacteria under a high-substrate environment should be
    loaded into the batch reactor if the batch reactor method is to be used to estimate kinetic parameters.
    Relation: Bioresource Technology
    Appears in Collections:[環境工程系所] 期刊論文

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