[ Valorisation énergétique des déchets solides ménagers de la ville de Thiès: Caractérisation et production de méthane à partir des résidus alimentaires ]
Volume 35, Issue 3, February 2022, Pages 457–473
Ahmed Ahmedou El Hacen1 and Alassane DIENE2
1 Laboratoire des Sciences et Techniques de l’Eau et l’Environnement (LaSTEE), Ecole Polytechnique de Thiès, BP A10 Thiès, Senegal
2 Ecole Polytechnique de Thiès, Thiès, Senegal
Original language: French
Copyright © 2022 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The objective of this study is to characterize the solid household waste of the city of Thiès and to propose ways of valorization. In order to carry out this study, a physical characterization campaign was carried out using the household waste characterization method (MODECOM) modified and adapted to the national context. The results of this campaign revealed that the fines represent more than 50% of the flow emitted by the medium and low standing. For the high standings, this fraction represents only 40%. Putrescibles (between 5% and 20% depending on the standing), plastics, cardboard, composites and paper are the most produced by the population. Similarly, the granulometry is dominated by the fraction of fines followed by the average diameters. The daily ratio is 0.528 kg/capita/day.The main characteristics determined during the physicochemical characterization are the carbon-nitrogen ratio (27), the chemical oxygen demand (263.8 mg/g), the biodegradability (3) and the methanogenic potential (312.69). The methanization of this waste produced a biogas with a maximum methane content of 41%. This methanization was controlled by monitoring two main parameters which are temperature and pH.
Author Keywords: Household waste, methanation, C/N ratio, methanogenic potential.
Volume 35, Issue 3, February 2022, Pages 457–473
Ahmed Ahmedou El Hacen1 and Alassane DIENE2
1 Laboratoire des Sciences et Techniques de l’Eau et l’Environnement (LaSTEE), Ecole Polytechnique de Thiès, BP A10 Thiès, Senegal
2 Ecole Polytechnique de Thiès, Thiès, Senegal
Original language: French
Copyright © 2022 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The objective of this study is to characterize the solid household waste of the city of Thiès and to propose ways of valorization. In order to carry out this study, a physical characterization campaign was carried out using the household waste characterization method (MODECOM) modified and adapted to the national context. The results of this campaign revealed that the fines represent more than 50% of the flow emitted by the medium and low standing. For the high standings, this fraction represents only 40%. Putrescibles (between 5% and 20% depending on the standing), plastics, cardboard, composites and paper are the most produced by the population. Similarly, the granulometry is dominated by the fraction of fines followed by the average diameters. The daily ratio is 0.528 kg/capita/day.The main characteristics determined during the physicochemical characterization are the carbon-nitrogen ratio (27), the chemical oxygen demand (263.8 mg/g), the biodegradability (3) and the methanogenic potential (312.69). The methanization of this waste produced a biogas with a maximum methane content of 41%. This methanization was controlled by monitoring two main parameters which are temperature and pH.
Author Keywords: Household waste, methanation, C/N ratio, methanogenic potential.
Abstract: (french)
Cette étude a pour objectif de caractériser les déchets solides ménagers de la ville de Thiès et de proposer des pistes de valorisation. Pour bien mener cette étude une campagne de caractérisation physique de déchets a été faite en utilisant la méthode de caractérisation des ordures ménagères (MODECOM) modifiée et adaptée au contexte national. Les résultats issus de cette campagne ont révélé que les fines représentent plus de 50% du flux émis par les moyens et bas standing. Pour les hauts standings, cette fraction ne représente que 40%. Les putrescibles (entre 5% et 20% selon le standing), les plastiques, les cartons, les composites et les papiers sont les plus produits par la population. De même, la granulométrie est dominée par la fraction des fines suivie par les diamètres moyens. Le ratio journalier est de 0,528 kg/habitant/ jour.Les principales caractéristiques déterminées lors de la caractérisation physicochimique sont le rapport carbone azote (27), la demande chimique en oxygène (263,8 mg/g), la biodégradabilité (3) et le potentiel méthanogène (312,69).Les résultats montrent que la fraction putrescible est susceptible d’être valorisée par méthanisation. La méthanisation de ces déchets a produit un biogaz avec un taux de méthane maximal de 41%. Cette méthanisation a été contrôlée par le suivi de deux paramètres principaux qui sont la température et le pH.
Author Keywords: Déchets ménagers, méthanisation, rapport C/N, potentiel méthanogène.
How to Cite this Article
Ahmed Ahmedou El Hacen and Alassane DIENE, “Energy recovery of solid household waste in the city of Thies: Characterization and production of methane from food residues,” International Journal of Innovation and Applied Studies, vol. 35, no. 3, pp. 457–473, February 2022.
