Resumo

DIAZ-ARCHUNDIA, Laura Verónica; BUENROSTRO-DELGADO, Otoniel; MANON-SALAS, María del Consuelo  e  HERNANDEZ-BERRIEL, María del Consuelo. Greenhouse Gases Emission from two Disposal Sites of Municipal Solid Wastes in Mexico. Ing. invest. y tecnol. [online]. 2017, vol.18, n.2, pp.149-159. ISSN 2594-0732.

In Mexico, 74% of the Municipal Solid Waste (MSW) produced are disposed in Landfills, however the operating conditions reported of the landfills as well as the open dumps sites are scarce the open dumps sites (ODS). The objective of this study was to determine the methane generation as Greenhouse gas in a Landfill and in an ODS. The operating conditions of the disposal sites were evaluated, the MSW disposed were characterized in wet (rainy) and dry (Dec-May) seasons, and the methane generation in venting wells and the surface emissions were determinated. In order to improve the disposal conditions of the study site operations, eight opportunity areas were detected and environmental problems of the ODS were documented. Even though, the type of sites operation and the amount of biodegradable matter in the MSW (50.36% in Landfill and 58.49% in ODS) influence directly the methane generation per ton of MSW, in ODS is increased during the wet season, while venting wells Landfill was 15% higher in the dry season due to leachate recirculation. The surface methane emissions in the ODS were 97% lower than in the Landfill, due to a possible spread trough the pores of soil which is a potential risk that requires immediate attention from the authorities.

Palavras-chave : final disposal site; landfill; open dump site; methane; wastes.

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