Browsing by Subject "Kinetic model"

Now showing 1 - 1 of 1
  • Thumbnail Image
    Item
    Restricted
    A kinetic study on anaerobic reduction of sulphate, part II: incorporation of temperature effects in the kinetic model
    (Elsevier, 2005) Moosa, S; Nemati, M; Harrison, S T L
    The effects of temperature on the kinetics of anaerobic sulphate reduction were studied in continuous bioreactors using acetate as an electron donor. Across the range of temperatures applied from 20 to View the MathML source, the increasing of volumetric loading rate up to 0.08 to View the MathML source resulted in a linear increase in reduction rate of sulphate. The increasing reaction rate showed a lower dependence on volumetric loading rate in the range 0.1–View the MathML source. Further increase in volumetric loading rate above View the MathML source was accompanied by wash out of bacterial cells and a sharp decrease in reaction rate. Despite a similar pattern for dependency of reaction rate on volumetric loading at all temperatures tested, the magnitude of reaction rate was influenced by temperature, with a maximum rate of View the MathML source observed at View the MathML source. The effect of temperature on maximum specific growth rate (μmax) and bacterial yield was insignificant. The values of maximum specific growth rate and yield were View the MathML source and 0.56–0.60 kg bacteria (View the MathML source), respectively. The decay coefficient (kd) and apparent saturation constant (View the MathML source) were both temperature dependent. The increase of temperature resulted in decreased values of View the MathML source, and higher values for kd. Using the experimental data effect of temperature was incorporated in a kinetic model previously developed for anaerobic reduction of sulphate.