Author(s)

Haroun Ali Adannou^1,2, N’Gueassembaye N’Gambainan¹, Dingammadji Richard¹

¹Department of Physics and Chemistry, Higher Normal School of N’Djamena, N’Djamena, Chad.
²African Laboratory for Sustainable Development Research, N’Djamena, Chad.

The general objective of this present work is to refine biogas in order to use it in an engine to produce electricity. The specific objective is focused on the availability and creation of energy, environmental protection, and the provision of biofertilizers to name a few. We worked on industrial applications and data for two years. The calculation methods and the most important parameters measured and observed during the work with various types of equations and monitoring, such as the search for the useful volume of the digester, the retention time, the organic load rate, the daily production of biogas, and the technological yield were made. The biogas produced was refined following the standards and purification procedure and the presence of H₂S brought back to a ppm lower than 200. To better characterize our biogas, a weekly, monthly and annual monitoring was done. The aim of this monitoring was to understand the production curve and bring technological elements of positive change by working on the pH, the temperature, the ratio and inhibitors. Thus, at the beginning, at 25˚C and 1 atm, the 6 gas molecules had a volume of 146.61 liters, so for 1 g of COD consumed, there was 0.7636 L of gas with 50% CH₄ and 50% CO₂. We therefore sought to make this result higher with a biogas rate of 60% CH₄ and 40% CO₂. It is observed that the values can vary by ±10% (sometimes more) depending on the implementation conditions.

Digester, Refined Biogas, Purification, Technological Efficiency, Electricity

Adannou, H. , N’Gambainan, N. and Richard, D. (2024) Biogas Refining for Better Physicochemical Characteristics and Good Yield. Natural Resources, 15, 255-272. doi: 10.4236/nr.2024.1510016.