Page 59 - “GREENING” THE CONTENT IN CXC® SYLLABUSES
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E-LEARNING MODULES AND LEARNING GUIDE FOR TEACHERS
Production Process
Source: OLADE
Biogas
Biogas is produced after organic materials (plant and animal
products) are broken down by bacteria in an oxygen-free
environment. This process is called anaerobic digestion. Biogas
systems use anaerobic digestion to recycle these organic
materials, turning them into biogas which is mainly made up of
methane (70%). Biogas occurs naturally in landfills. Biogas can
also be harnessed by using food waste or animal dung which is
fed into a bio-digester. The gas is then captured and piped for use Source: GEA
by households and commercial businesses.
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