Assessment of CH4 and CO2 surface emissions from Polesgo's landfill (Ouagadougou, Burkina Faso) based on static chamber method,
Auteur(s): Kayaba Haro, Issoufou Ouarma, Bernard Nana, Antoine Bere, Guy Christian Tubreoumya, Sié Zacharie Kam, Patricia Laville, Benjamin Loubet, Jean Koulidiati
Résumé

Methane (CH4) and carbon dioxide (CO2) surface emissions from Polesgo's landfill (Ouagadougou, Burkina Faso) were measured using the static chamber technique in 2017 and 2018. The Polesgo's landfill was composed of four zones: Phase I, II, Phase III, and SP. The surface of Phase I was fully covered and its conditions are better for surface emission measurements. As results concerning the Phase I zone, the geospatial means flux rates of CH4 (657 mg m−2 h−1 in 2017 and 1210 mg m−2 h−1 in 2018, respectively) are measured higher than the tolerable value reported in literature. The emitted CH4 or CO2 have permitted to locate higher surface emissions which are related to the cover state. The calculated gas collection efficiency (27.4% in 2017 and 23.0% in 2018) is low compared to those reported for landfills integrating landfill gas (LFG) extraction system. The carbon footprint calculations (24,966 tCO2-eq 2017 and 40,025 tCO2-eq in 2018, respectively) shown that Polesgo's landfill is a significant source of greenhouse gases (GHG) and its important potential for organic recovery can contribute to reduce the carbon footprint.

Mots-clés

Municipal solid waste landfilling CH4 CO2 Collection efficiency Static chamber method Carbon footprint

962
Enseignants
5577
Publications
49
Laboratoires
84
Projets