Influence of geo-environmental factors on landfill fugitive biogas emissions
by Carlos Alberto Alves Barreto; William de Paiva; Márcio Camargo de Melo; Veruschka Escarião Dessoles Monteiro; Fernando Fernandes Vieira; Marcus Vinicius Melo de Lyra; Daniel Epifânio Bezerra
International Journal of Environment and Waste Management (IJEWM), Vol. 33, No. 3, 2024

Abstract: Geo-environmental parameters play the main role in fugitive gas emissions through landfill compacted soil cover layer. Many factors affect biogas emissions, like landfill temperature, external temperature, gas concentration (CO₂, O₂, and CH₄), and local weather conditions. This study aims to identify the intervening factors in the fugitive emissions of biogas through the layer of compacted soil cover of the landfill through the statistical method of principal component analysis (PCA). The measurement of gas flux through the landfill cover layer was made by combining the static flow plate test methodology, gas concentrations, and regional rainfall measurements. Among the factors studied, weather conditions, landfill temperature, and external temperature were the most significant on gas emission through the cover layer. Besides, carbon dioxide and methane flux had independent behaviours. The results highlighted that the mean soil compaction degree and the landfill cell cover layer thickness affect positively the layer gas retention properties.

Online publication date: Fri, 22-Mar-2024

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