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BIOGAS

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Biogas is released during anaerobic digestion and captured for use as a clean fuel. When produced from food waste, it is approximately 60% methane and 39% carbon dioxide with small amounts of water vapour, hydrogen sulphide, and ammonia.

Clean energy

It may be burned raw to generate light, heat or electricity, or purified to over 99% methane, at which point it becomes identical to natural gas. It is known as biomethane and can be used:

  • to generate heat using a boiler,
  • for cooking or lighting,
  • to power CHP (combined heat and power) units, which generate electricity and heat,
  • as a vehicle fuel,
  • or be injected into the grid.

Widespread use of biomethane could lead to improved air quality.

The current FIT (Feed in Tariff) for biogas-generated electricity is 14p/kWh for small installations and biogas-generated heat is eligible for 6.5p p/kWh.

Biomethane for transport

The main causes of air pollution in cities are emissions from traffic and gas boilers. Compared to diesel and petrol, biomethane burns cleaner and more quietly, significantly lowering PM10s ((particulates) and NOx (nitrogen oxides), the most harmful emissions for health.

Use of biomethane from waste actually results in a net saving of greenhouse gas emissions, as decomposing organic waste would otherwise release methane into the atmosphere.

Europe’s first biomethane refueling station was installed at Camden’s Transport Depot in 2008, storing up to 6 tonnes of liquid biomethane for use with public and private fleets.

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METHANE

methane

Anaerobic digestion captures methane in the process of decomposing organic waste. This is important as methane is a far more powerful... Read More >

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AIR QUALITY

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By generating a clean fuel, anaerobic digestion helps to reduce air pollution and our reliance on less sustainable sources of energy... Read More >

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ANAEROBIC DIGESTION

anaerobic digestion

During decomposition, organic wastes (food, manure, non-woody green waste etc.) emit CO2 and methane. Methane is a greenhouse gas 20-30 times more... Read More >

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