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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
Author(s)
Amadou Sidibe1, Ansoumane Sakouvogui2, Idrissa Diaby3 and Mamby Keita3
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DOI:10.17265/2162-5298/2022.05.002
Affiliation(s)
1. Department of Physics, Faculty of Natural Sciences, Julius Nyéréré University of Kankan, BP 209, Guinea
2. Energy Department, Higher Institute of Technology of Mamou, BP 63, Guinea
3. Department of Physics, Faculty of Sciences, Gamal Abdel Nasser University of Conakry, BP 1147, Guinea
ABSTRACT
This study is a continuation of our research work on the energy recovery of OM (Organic Matter) and the protection of the environment. It took place from October 1 to November 25, 2021 in the poultry farm of Mr. Elhadj Daye KABA in the Senkefra district, urban commune of Kankan. During this work, we designed, built and tested a 6 m3 biodigester. Cow dung (2,500 kg) with 2,300 L of water served as a substrate for the production of biogas during 30 days of digestion. The following physico-chemical parameters: Temperature (T °C), Humidity (H%), Hydrogen potential (pH), Dry Matter (DM), Organic Matter (OM) and the ratio between Carbon (C ) and Nitrogen (N) (C/N) of cow dung were determined, namely: T (28°); H (75%); pH (6.5); MS (15%); MO (55%) and C/N (25%). During the 30 days of digestion, the temperature varied from 27 to 35°C with an average of 30.57 °C (mesophilic digestion); the pH varied from 6 to 9, with an average of 7.58; the daily production kinetics represented the four stages of digestion (hydrolysis, acidogenesis, acetogenesis and methanogenesis). The cumulative production of biogas is 198 m3. The composition of the biogas produced is 60% CH4, 36% CO2, 2% N2, 2% H2S and 1.5% H2. The biogas produced was used for lighting, water heating and cooking. These results show that the biogas produced is of good quality and remains consistent with the literature.
KEYWORDS
Biodigester, biogas, design, farm, cow dung, Kankan.
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