Biogas plants have proven to be the cheapest and the most convenient to set-up source of green and renewable energy. Biogas generates from anaerobic digestion of organic compounds such as food wastes, cellulosic biomass, and animal waste. Because of its low calorific value, biogas use had been limited to households only.
However, with the latest innovations in technology and the introduction of biogas enrichment plants, this environmentally friendly energy can even be used as vehicle fuel, for the generation of electricity etc.
However, with the latest innovations in technology and the introduction of biogas enrichment plants, this environmentally friendly energy can even be used as vehicle fuel, for the generation of electricity etc.
Need for Biogas enrichment system
Biogas produced in the waste treatment plants and wastewater treatment stations is a mixture of:
The Carbon Dioxide in the biogas has a very negative impact on its power output and makes it difficult to compress the same. Moreover, its freezing point is different from Methane, and it can cause a problem when expanding back from a compressed state
Hydrogen Sulphide, water, and Siloxanes have a corrosive effect on pipes and other metals parts involved in the supply and use of the gas. Water, in the form of moisture, also reduces the heating value of the gas.
- Methane: 50-70%
- Carbon Dioxide 30-45%
- Hydrogen Sulphide
- Water
- Siloxanes
- Other impurities
The Carbon Dioxide in the biogas has a very negative impact on its power output and makes it difficult to compress the same. Moreover, its freezing point is different from Methane, and it can cause a problem when expanding back from a compressed state
Hydrogen Sulphide, water, and Siloxanes have a corrosive effect on pipes and other metals parts involved in the supply and use of the gas. Water, in the form of moisture, also reduces the heating value of the gas.
Enrichment Process
Biogas enrichment plants work on reducing and removing these impurities, resulting in an increased concentration of Methane while increasing the calorific value of the gas. With biogas enrichment systems, the methane in biogas can be concentrated to the same standards as natural gas.Uses for enriched Biogas:
Through the use of biogas enrichment technologies, carbon dioxide is eliminated from the biogas very efficiently and resulting biomethane possesses the quality equivalent to that of natural gas.
Additionally, biomethane is a renewable gas with high calorific value that can be injected into the pre-existing natural gas.
Additionally, biomethane is a renewable gas with high calorific value that can be injected into the pre-existing natural gas.
Some of the uses of Biogas are:
- Combustion in various commercial facilities
- Biogas for direct consumption in households
- Bio fuels for vehicles
- Green energy
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