Study of the methanogenic potential of urban waste from the city of N'Djamena for recovery into biogas

The different types of urban waste as well as household waste are generally disposed of in open landfills affecting environmental sustainability. These wastes, by the release of contaminants such as leachates and greenhouse gases, increase the pollution potential of the sites. We recovered a quantity to carry out our experiments. The recovery of waste into biogas inevitably takes place in hermetically sealed enclosures called biodigesters. In this work we highlighted several types of waste at room temperature in a 0.75l can equipped with an empty inflatable balloon used for the recovery of biogas, which constituted our biodigester. Then a second experiment was carried out on the mesophilic temperature and the results were compared. The aim is to see the waste with the best biogas potential in terms of quality and quantity of production. The experiment consisted of working at an ambient temperature around 35°C±2 °C and up to 45 °C (mesophilic temperature). For this experiment we found that some bio-digesters started producing after two hours of time, the inflatable balloon increased in volume every hour up to 24 hours before and remained constant. We used the resources in terms of substrate and equipment of the Afric-Lab laboratory and that of the Physics-Chemistry department of the Higher Normal School of N'Djamena.