The authors present a mathematical model developed on the basis of physico- chemical and biological patterns of organic matter transformation processes. The model takes into account the rate of decomposition of the substrate, the volume of biogas released, and the time required to achieve maximum product yield. The methodological approach is based on a systematic analysis that includes the stages of theoretical research, mathematical modeling and experimental verification. The theoretical analysis is based on a detailed study of the movement of methanogenic microorganisms inside the methane tank during biogas production. The key parameter in this case is the maximum biogas output. As a result of the literature review, the main factors influencing the process of anaerobic digestion of pig manure in a methane tank have been identified. It has been found that deviations of the acidity index from the optimal value lead to a significant decrease in the rate of biogas formation, which is important to take into account when designing biogas plants. The dependences of the biogas output parameters on these factors make it possible to formulate the basic principles of the organic matter transformation process.

Takhanov Mikhail P., Petrov Nikolay V.

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