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Related Experiment Videos

Solid state fermentation of swine manures.

J P Hsu, H H Wang

    Zhonghua Minguo Wei Sheng Wu Ji Mian Yi Xue Za Zhi = Chinese Journal of Microbiology and Immunology
    |February 1, 1986
    PubMed
    Summary
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    This study models swine manure solid-state fermentation, finding that CO2 production indicates stabilization. Optimal conditions involve moderate temperatures (35°C) and suitable moisture for efficient manure stabilization.

    Area of Science:

    • Biotechnology
    • Environmental Science
    • Agricultural Engineering

    Background:

    • Solid-state fermentation (SSF) is a viable method for treating swine manure.
    • Understanding the kinetics of SSF is crucial for optimizing manure stabilization and reducing environmental impact.

    Purpose of the Study:

    • To develop a kinetic model for swine manure SSF under aerobic and anaerobic conditions.
    • To identify key factors influencing the rate of manure stabilization and bacterial activity.

    Main Methods:

    • Proposed a kinetic model for solid-state fermentation of swine manure.
    • Utilized CO2 production as an indicator of manure stabilization.
    • Analyzed experimental data correlating temperature and moisture content with stabilization rates.

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    Main Results:

    • Initial stabilization rate increases with temperature and correlates with initial moisture content.
    • Bacterial deactivation rate is constant at 25-35°C but increases significantly at 45°C.
    • The product of the reaction constant and initial bacterial activity measures the initial stabilization rate.

    Conclusions:

    • Optimal swine manure SSF occurs at medium-high temperatures (around 35°C) with appropriate initial moisture.
    • Temperature significantly impacts bacterial activity and deactivation rates during fermentation.
    • The kinetic model provides insights for efficient and controlled swine manure treatment.