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Abstract

The article reviews selected systems and technological variants of biogas production. Biogas installations and methods of biogas production were characterized in terms of control and measurement. The required technical and technological criteria for biogas production and treatment were indicated. The conditions of biorefining in the context of the generation of new products were analysed. Based on the amount of manure produced in pig production, the potential of biogas production in Poland was indicated based on the visualization of the biogas production potential by poviats in Poland. The substrate in the form of slurry, manure and other agricultural waste for the production of agricultural biogas in Poland was analysed quantitatively. The economic aspects in the agricultural biogas plant sector were revealed, indicating the operation of the economies of scale for this industry sector.
An example of a pilot biogas production for anaerobic digestion using pig slurry is presented. The paper presents pre-liminary results of experimental studies on the course of changes in the biogas volume flow for the average daily production of agricultural biogas and the qualitative composition of agricultural biogas produced from pig slurry. The results of the measurements show a clear influence of the hydrodynamic mixing system of the substrate for the evaluation of the biogas flow through the adhesive bed in the context of agricultural biogas production in the range (1–14) m3 d–1.
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Authors and Affiliations

Grzegorz Wałowski
1
ORCID: ORCID

  1. Institute of Technology and Life Sciences, Falenty, Department of Renewable Energy, Poznań Branch, ul. Biskupińska 67, 60-463 Poznań, Poland
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Abstract

The paper reviews selected methods of agricultural biogas production and characterizes their technical and technological aspects. The conditions of the anaerobic fermentation process in the reactor with adhesive skeleton bed were analyzed. The required technological criteria for the production of biogas from a substrate in the form of pig slurry were indicated. As part of experimental studies, evaluation of the biogas replacement resistance coefficient and the permeability coefficient as a function of the Reynolds number were made. The method of numerical simulation with the use of a tool containing computational fluid dynamics codes was applied. Using the turbulent flow model – the RANS model with the enhanced wall treatment option, a numerical simulation was carried out, allowing for a detailed analysis of hydrodynamic phenomena in the adhesive skeleton bed. The paper presents the experimental and numerical results that allow to understand the fluid flow characteristics for the intensification of agricultural biogas production.
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Bibliography

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[15] Wałowski G.: Interpretation of the mechanism of biogas flow through an adhesive bed in analogy to gas-permeability for a structural model of a porous material. Int. J. Curr. Res. 10(2018), 12, 76225–76228.
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Authors and Affiliations

Grzegorz Wałowski
1
ORCID: ORCID

  1. Institute of Technology and Life Sciences, Falenty, Department of Renewable Energy, Poznań Branch, ul. Biskupińska 67, 60-463 Poznań, Poland

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