Biogas is a type of biofuel that is naturally produced from the decomposition of organic waste. When organic matter
, such as food scraps and animal waste, break down in an anaerobic environment (an environment absent of oxygen)
they release a blend of gases, primarily methane and carbon dioxide. Because this decomposition happens in an
anaerobic environment, the process of producing biogas is also known as anaerobic digestion.
Anaerobic digestion is a natural form of waste-to-energy that uses the process of fermentation to breakdown organic matter. Animal manure, food scraps, wastewater, and sewage are all examples of organic matter that can produce biogas by anaerobic digestion. Due to the high content of methane in biogas (typically 50-75%) biogas is flammable, and therefore produces a deep blue flame, and can be used as an energy source.
The advantages of biogas are limitless. Biogas helps reduce soil and water pollution by making use of this waste and converting them to useful products. Also, the process of biogas production leads to the production of an equally important product, which is the organic fertilizer. These fertilizers are better than their synthetic counterparts in that they are more receptive by the plants and have fewer side effects.