Assessment of methane generation, oxidation, and emission in a subtropical landfill test cell

Assessment of methane generation, oxidation, and emission in a subtropical landfill test cell

Author Moreira, Joao M. L. Google Scholar
Candiani, Giovano Autor UNIFESP Google Scholar
Abstract This paper presents results of a methane balance assessment in a test cell built in a region with a subtropical climate near Sao Paulo, Brazil. Measurements and calculations were carried out to obtain the total methane emission to the atmosphere, the methane oxidation rate in the cover, and the total methane generation rate in the test cell. The oxidation rate was obtained through a calculation scheme based on a vertical one-dimensional methane transport in the cover region. The measured maximum and mean methane fluxes to the atmosphere were 124.4 and 15.87 gm(-2) d(-1), respectively. The totalmethane generation rate obtained for the test cell was 0.0380 +/- 0.0075 mol s(-1). The results yielded that 69% of the emitted methane occurred through the central well and 31 % through the cover interface with the atmosphere. The evaluations of the methane oxidation fraction for localized conditions in the lateral embankment of the test cell yielded 0.36 +/- 0.11, while for the whole test cell yielded 0.15 +/- 0.10. These results conciliate localized and overall evaluations reported in the literature. The specific methane generation rate obtained for the municipal solid waste with an age of 410 days was 317 +/- 62 mol year(-1) ton(-1). This result from the subtropical Sao Paulo region is lower than reported figures for tropical climates and higher than reported figures for temperate climates.
Keywords Methane emission
Methane generation
Methane oxidation
Test cell
Subtropical climate
xmlui.dri2xhtml.METS-1.0.item-coverage Dordrecht
Language English
Sponsor Essencis Solucoes Ambientais SA
Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (Capes)
Date 2016
Published in Environmental Monitoring And Assessment. Dordrecht, v. 188, n. 8, p. -, 2016.
ISSN 0167-6369 (Sherpa/Romeo, impact factor)
Publisher Springer
Extent -
Access rights Closed access
Type Article
Web of Science ID WOS:000381144300021

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