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Event: 2016 ECHO West Africa Forum: Ibadan, Nigeria (2016-04-12)

When the organic matter decomposes in the absence of oxygen , it produces gas called biogas . This gas is a mixture of methane (CH4) and carbon dioxide (CO2) with small amounts of nitrogen , hydrogen, carbon monoxide and other compounds. Biogas has multiple uses . To produce and capture the biogas is used a device called a bio digester. There are many models of bio methane digester , which range from the most complex to the simplest , from the largest to smallest. After giving basic information on biogas , this presentation will focus firstly on the two main types of bio digesters : the continuous feed and the fed-batch ; and secondly on the simple, locally available materials to make oneself its own biogas.