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Correction factors for large-scale greenhouse gas assessment from pulp and paper mill sludge landfill sites

Ribeiro Paula Ranieri, Cusson Mathieu, Bertrand Normand, Bouchard Sylvie, Chantigny Martin H., Lemieux Julie, Marouani Emna, Villeneuve Claude et Faubert Patrick. (2024). Correction factors for large-scale greenhouse gas assessment from pulp and paper mill sludge landfill sites. Waste Management, 177, p. 177-181.

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URL officielle: https://dx.doi.org/doi:10.1016/j.wasman.2024.01.02...

Résumé

Assessments of greenhouse gas (GHG) emissions in managed areas are facing various challenges. A non-flow-through, non-steady-state (NFT-NSS) chamber coupled to a frame permanently inserted into the landfilled substrates is a standard method for quantifying GHG emissions in managed areas, such as pulp and paper mill sludge (PPMS) landfill sites. Frequent measurements are needed to minimize uncertainties on GHG emission factors at the landfill site scale. However, maintaining a frame inserted into the substrates for a long time period is often impossible due to landfilling management operations. Therefore, GHG measurements using NFT-NSS chambers placed directly on substrates’ surface could be an interesting option. Our objectives were to determine the relationships between CO2, CH4, and N2O fluxes measured with (F + ) and without (F-) a frame inserted in the substrates’ surface and to develop correction factors for fluxes measured without a frame. Measurements were made at different PPMS landfill sites in the province of Québec, Canada. Stronger GHG flux relationships were observed at the provincial (across sites) than the specific site scale: the variance in GHG fluxes from F- chambers explained up to 80 % of variance in fluxes from F + chambers. The measured CO2, CH4, and N2O fluxes in F- chambers were on average 53, 78, and 63 % lower, respectively, than those estimated by the models at provincial scale. The correction factors developed with this approach could greatly extend the number of sites where in situ GHG measurements can be done and would help refining GHG inventories at the provincial and national levels.

Type de document:Article publié dans une revue avec comité d'évaluation
ISSN:0956053X
Volume:177
Pages:p. 177-181
Version évaluée par les pairs:Oui
Date:Avril 2024
Nombre de pages:5
Identifiant unique:10.1016/j.wasman.2024.01.025
Sujets:Sciences naturelles et génie > Sciences appliquées > Eau et environnement
Sciences naturelles et génie > Sciences appliquées > Foresterie et sciences du bois
Sciences naturelles et génie > Sciences naturelles > Biologie et autres sciences connexes
Département, module, service et unité de recherche:Départements et modules > Département des sciences fondamentales
Unités de recherche > Centre de recherche sur la Boréalie (CREB)
Unités de recherche > Carbone boréal
Mots-clés:climate change, paper mill sludge, pulp sludge, biosolid, pulp and paper mill, landfill site
Déposé le:12 févr. 2024 16:32
Dernière modification:17 juin 2024 19:17
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