Construction, monitoring, and efficiency of a biofilter treating a high flow, lean, landfill gas.

Autor: Almeida JL; Université de Sherbrooke, 2500 Boul. de l'Université Sherbrooke, Québec J1K2R1, Canada. Electronic address: jessica.leindorf.de.almeida@usherbrooke.ca., Dumouchel J; Université de Sherbrooke, 2500 Boul. de l'Université Sherbrooke, Québec J1K2R1, Canada. Electronic address: joelle.dumouchel@usherbrooke.ca., Santos JJDN; Université de Sherbrooke, 2500 Boul. de l'Université Sherbrooke, Québec J1K2R1, Canada. Electronic address: jeovana.jisla.das.neves.santos@usherbrooke.ca., Dulac Y; Université de Sherbrooke, 2500 Boul. de l'Université Sherbrooke, Québec J1K2R1, Canada. Electronic address: yohan.dulac@usherbrooke.ca., Cabral AR; Université de Sherbrooke, 2500 Boul. de l'Université Sherbrooke, Québec J1K2R1, Canada. Electronic address: alexandre.cabral@usherbrooke.ca., Héroux M; Université de Sherbrooke, 2500 Boul. de l'Université Sherbrooke, Québec J1K2R1, Canada; Previously with the City of Montréal, 2235 Rue Michel-Jurdant, Montréal, Québec H1Z 4N1, Canada. Electronic address: herouxmar@gmail.com.
Jazyk: angličtina
Zdroj: Waste management (New York, N.Y.) [Waste Manag] 2024 Dec 15; Vol. 190, pp. 455-464. Date of Electronic Publication: 2024 Oct 17.
DOI: 10.1016/j.wasman.2024.10.007
Abstrakt: The City of Montreal has committed to achieve carbon neutrality by 2050. To meet this commitment, the city has adopted the Climate Plan 2020-2030, which includes the treatment of landfill gas (LFG). Within this framework, this research aimed to investigate the efficiency of a biofilter designed to treat high volumes of low-concentration LFG collected from lateral trenches at the Complexe Environnemental de Saint-Michel (CESM) in Montreal. The methane oxidation layer (MOL) of this biofilter, employed a material composed of 50% compost and 50% wood chips. Over a 54-week monitoring period, the system effectively maintained temperature conditions favorable to bacterial activity and methane oxidation. To assess the accuracy of predicting the hydraulic behavior of a methane oxidation biosystem (MOB) using numerical modeling, the biofilter was designed and constructed with specific features. In particular, the pore voids at the interface between the MOL and the gas distribution layer (GDL) were intentionally blocked along the downstream quarter of the biofilter length. This design ensures that water reaches the occlusion point due to the capillary barrier effect. Moisture content values remained within the expected range for most of the monitoring phase but increased with time. Despite this issue, the biofilter achieved an average efficiency higher than 95%. The findings underscore the capability of biosystems to manage substantial volumes of lean LFG, but also highlight the importance of acclimatizing the compost before exposure to maximum landfill load.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2024. Published by Elsevier Ltd.)
Databáze: MEDLINE
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