Title: Methane generation potential for waste with different landfill ages

Authors: Tuilly de Fátima Macedo Furtado Guerra; Thiago de Sá Sena; Francisco Auriberto Ferreira Marques Junior; Márcio Camargo de Melo; William de Paiva

Addresses: Department of Civil Engineering, Federal University of Campina Grande, Brazil ' Department of Hydraulic and Environmental Engineering, Federal University of Ceará, Brazil ' Department of Sanitary and Environmental Engineering, State University of Paraíba, Brazil ' Department of Civil Engineering, Federal University of Campina Grande, Brazil ' Department of Sanitary and Environmental Engineering, State University of Paraíba, Brazil

Abstract: This study evaluated the potential for methane (CH₄) generation from municipal solid waste (MSW) at ages 0, 1, and 2 from the landfill located in Campina Grande, in the State of Paraíba, Brazil. Two projection scenarios for the decay constant value, the CH₄ generation rate (k) were analysed: 0.05 and 0.1 year^-1 using a first-order kinetic model. Only those estimations did not reflect the current values of the CH₄ flow in the landfill, but they indicate, when associated with the MSW physical-chemical analysis results, that the landfill has had a marked biodegradation activity since its first year, decreasing rapidly after that, and that suggests higher k values to better represent the behaviour of gas generation from MSW in the first years of landfilling.

Keywords: landfill gas; landfilling ages; semi-arid climate.

DOI: 10.1504/IJEWM.2024.141627

International Journal of Environment and Waste Management, 2024 Vol.35 No.2, pp.165 - 181

Received: 17 Dec 2021
Accepted: 06 Jul 2022
Published online: 27 Sep 2024 *

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