Winter’s Effect On Koi, Goldfish, and Ponds by Richard E. Carlson

Discussion in 'Winterizing Your Pond' started by urglik, Oct 18, 2016.

  1. urglik

    Meyer Jordan Tadpole

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    I think that you meant to say nitrifying bacteria. Denitrification is the reduction of Nitrate.

    Where did you find that formula?
     
    Meyer Jordan, Nov 23, 2016
    #21
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  2. urglik

    budgenator

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    page 16 (44/178)
    Biological Nitrate Removal Pretreatment for a Drinking Water Application
    Prepared by: Mark Lichtwardt
    Burns & McDonnell Engineering Company, Inc., 9785 Maroon Circle, Suite 400
    Centennial, CO 80112-5919
    and
    Bud Hart
    City of Thornton, 9500 Civic Center Drive, Thornton, CO 80229-4326
    http://www.waterrf.org/publicreportlibrary/4202.pdf It is about Denitrifing not Nitrifying, specificaly bacteria that break down nitrates to build aminoacids for growth, Facultative anaerobic bacteria, I was looking into http://www.mankysanke.co.uk/html/anoxic_filtration.html anoxic filtration/biocenosis baskets when I stumbled across it. While its not about the aerobic nitrifying bacteria, my suspicion is the kinetics would be pretty close.
     
    budgenator, Dec 1, 2016
    #22
    Meyer Jordan likes this.
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  3. urglik

    Meyer Jordan Tadpole

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    Thanks for the link. I have added it to my library and will enjoy reading it.
    The application of that formula to the effect of temperature on the growth of nitrifying bacteria is 'Iffy'. One is dealing with to distinct types of bacteria: aerobic and heterotrophic (some are facultative). Even within the group of aerobic nitrifiers, there is a considerable range of response to temperature with Nitrobacter and Nitrosomonas showing very little growth at 5C and others, such as Nitrotoga showing a healthy growth at the same temperature. Some nitrifiers that have adapted to lower temperatures have actually exhibited growth at -5C.
    ww.int-res.com/abstracts/meps/v21/
    Jones, R. D., Morita, R. Y.
    Low-temperature growth and whole-cell kinetics of a marine ammonium oxidizer

    As a result while this formula may be useful when dealing with anaerobic denitrification it would have very limited, if any, practical use when applied to aerobic nitrifiers.
     
    Meyer Jordan, Dec 1, 2016
    #23
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