Estimation of the Amount of Electrical Energy Available From the Biogas Produced at the Faecal Sludge Treatment Plant in the City of Sokodé




Biomass, biogas, electrical energy, faecal sludge


 The purpose of this study is to estimate the amount of energy produced from biogas at the faecal sludge treatment plant in the city of Sokodé. The methodological approach consisted in producing biogas by co-digestion of faecal sludge with the fermentable fractions of solid waste then in estimating the quantity of energy available from the produced biogas. Tests of co-digestion of faecal sludge and fermentable fractions of solid waste, showed that from 2258 tons/DM of biomass in one year, 44476 m3 of biogas, or 29177 m3 of methane could be produced. The methane content, which is 65.6 %, is a very interesting source of energy. Several techniques for producing energy from biogas exist, one of which is the production of electricity. In this study, it is a question of making the choice of an adequate electric motor which will allow to produce electric energy from the biogas on the faecal sludge treatment plant. Thus, it was necessary to estimate the quantity of energy available from the biogas produced. To do so, it was calculated the quantity of energy that can be produced by the biogas in one year, the quantity of recoverable energy produced in a year and the quantity of energy supplied by biogas in one hour. The results showed that by 2035, the co-digestion of fermentable solid waste and faecal sludge from the city of Sokodé, would produce 534,246 kWh. The recoverable part would be 507,534 kWh and the energy supplied is 58 kWh.


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Samah H. Diagnosis of the energy situation in Togo. Togolese Republic: Ministry of the Environment, Department of Water and Forests; 2015.

Tcha-Thom M. Study of a sustainable way of methanization of fruit and slaughter wastes in Togo: Evaluation of the agronomic potential of digestate on the soil of Kara.. INIS; 2019 July, p. 205.

Sigot L. Fine purification of biogas for energy recovery in a SOFC-type fuel cell: Adsorption of octamethylcyclotetrasiloxane and hydrogen sulfide. Environment and Society. Lyon: INSA; 2014.

Lejeune P. Electrical and thermal recovery of methanization biogas. Paris: EFE training - Biomass for energy uses; 2008.

Haushalter J. Sizing of a biomass cogeneration. Mulhouse: Wärtsilä; 2007

Couturier C. Techniques for producing electricity from biogas and syngas. 2009.

Heduit. Methanization of animal droppings. Depollution and energy production. General review of thermics. 1987;26(3):228-235.

Ohannessian A. Volatile Organic Silicon Compounds: A brake on energy recovery from biogas. Genesis and Mechanisms of Formation. Lyon: National Institute of Applied Sciences; 2008..

Akpaki O. Physico-chemical characterization of Attidjin faecal sludge (prefecture of the gulf-togo). Chemistry of Water and the Environment, University of Lomé; 2015, p. 167.

Pouech, P. Interest of co-digestion for the recovery of slurry and the treatment of fermentable waste at the scale of a territory. 37th Swine days' Research; Paris. 2005, 39-44..

Couturier C, Berger S, Hérau I. Anaerobic digestion of urban sludge. Toulouse: Water Agency Adour-Garonne; 2001.




How to Cite

Krou, N. M., Baba, G. ., & Akpaki , O. . (2021). Estimation of the Amount of Electrical Energy Available From the Biogas Produced at the Faecal Sludge Treatment Plant in the City of Sokodé. TH Wildau Engineering and Natural Sciences Proceedings , 1.