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Statistical Approach for Assessing the Suitability of Substrates for a Biogas Plant

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  • Peter Tauš

    (Institute of Earth Resources, Faculty of Mining, Ecology, Processing Control and Geotechnology, Technical University of Kosice, 040 01 Kosice, Slovakia)

  • Dušan Kudelas

    (Institute of Earth Resources, Faculty of Mining, Ecology, Processing Control and Geotechnology, Technical University of Kosice, 040 01 Kosice, Slovakia)

  • Marcela Taušová

    (Institute of Earth Resources, Faculty of Mining, Ecology, Processing Control and Geotechnology, Technical University of Kosice, 040 01 Kosice, Slovakia)

  • Ľubomíra Gabániová

    (Institute of Earth Resources, Faculty of Mining, Ecology, Processing Control and Geotechnology, Technical University of Kosice, 040 01 Kosice, Slovakia)

Abstract

In this paper, we focused on the statistical evaluation of inputs to a biogas plant processing a mixture of kitchen waste and agricultural crops to ensure stable biogas production. The aim of the research was to identify the components of the input substrates that will ensure the maximum yield of CH 4 and the substrates that increase the production of H 2 S. By a suitable combination of substrates, it is possible to optimize the production of biogas from the biogas plant. We analyzed a sample of 858 measurements, which were carried out in a selected biogas station for a period of 2.5 years. We were interested in differences in production of CH 4 , O 2 , and H 2 S outputs depending on the composition of inputs. From 17 inputs, 125 substrates were formed. The significance of the influence of individual substrates as categorical variables with the achieved numerical values was assessed by means of ANOVA analysis. Selected substrates were sorted based on CH 4 and H 2 S production using graphical methods (bubble graphs) into four quadrants defining the desired and undesired values of the output variables. We identified a total of 20 suitable and 11 unsuitable substrates to produce quality biogas. Sorghum silage substrate was defined as a substrate that significantly increases the proportion of H 2 S in biogas.

Suggested Citation

  • Peter Tauš & Dušan Kudelas & Marcela Taušová & Ľubomíra Gabániová, 2020. "Statistical Approach for Assessing the Suitability of Substrates for a Biogas Plant," Sustainability, MDPI, vol. 12(21), pages 1-13, October.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:21:p:9044-:d:437684
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    References listed on IDEAS

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    1. Scarlat, Nicolae & Dallemand, Jean-François & Fahl, Fernando, 2018. "Biogas: Developments and perspectives in Europe," Renewable Energy, Elsevier, vol. 129(PA), pages 457-472.
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