A Study of Energy Potential of Substrates of Plantain (Musa paradisiaca) of NZerekore Prefecture, Republic of Guinea

Abstract

Biogas, an ecological and economical solution to the challenges of climate change and the energy transition, also makes it possible to manage waste and produce sustainable energy. The experiment involves nine 20-liter digesters for the production of biogas through anaerobic fermentation. A gasometer stores biogas, and a tank collects the condensed water. Analysis of plantain substrates reveals differences between leaves, stems, and skins: the stem is the most humid (93.22%), followed by leaves (83.42%) and skins (83.5%). Leaves also have the highest organic matter content (90.7%) and low organic carbon (9.29%), unlike skins (26.11%). Waste production shows a large amount of leaves (363.525 kg/day), while stems (7.975 kg/day) and skins (0.5 kg/day) are less abundant, highlighting the potential of leaves as a substrate for biogas. Temperature fluctuations influence methanization, and biogas production varies accordingly. The leaf production curve shows continuous growth, unlike those of the stems and skins, which are more limited. The leaf biogas combustibility test reveals an intense and stable flame, indicating a high methane content and few impurities. These results show that plantain leaves are a promising source of biogas, offering a sustainable alternative to conventional energy sources and contributing to organic waste management.