Gazasia Ltd.

Gazasia Ltd.

Anaerobic digestion (AD) plants


Anaerobic digestion (AD) plants degrade organic material using micro-organisms in the absence of oxygen to produce biogas, a mixture of methane (circa 60%), carbon dioxide (circa 40%) and trace amounts of other gases.

Apart from the capital cost of building a plant, biogas produced by AD has several potential advantages over landfill gas as follows:

  • AD gas is less complex and has a higher methane content at ~60% (~50% for landfill gas).
  • Front-end revenue can be generated through ‘gate fees’ for receiving waste.
  • The process allows operations to be strategically located close to the origin of waste arising and demand for product.

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