Characterization of the technical landfill biogas of the Greater Agadir (Morocco) and its valorization for the treatment of leachates by forced evaporation

Résumé

The energy plays an important role in the industrialization of the society. Biogas is a green energy that is booming and garnered attention of the energy sector. This work focuses on the valorization of biogas generated by the biodegradation of household waste from the former Landfill of Great Agadir-Morocco. The biogas composition is studied in terms of CH₄, CO₂, O₂ and H₂S by analyzing the samples taken at five control stations connecting to the 47 wells. The analysis indicate that this biogas is composed in average value of: 50.3% of methane (CH₄), 24.9% of carbon dioxide (CO₂), 0.9% of oxygen (O₂) and 15.56 ppm hydrogen sulfide (H₂S). In the last part, this biogas, is valorized in the form of heat, to treat the leachates from the actual landfield of Greater Agadir. The forced evaporation of leachates leads to condensate water with few pollutants, which can be reused and reduced residues that can be recycled in the landfill.