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Anaerobic Digestion - Definition

Anaerobic digestion is a form of slurry treatment. During the process organic raw materials are converted to biogas, a mixture of carbon dioxide and methane with traces of other constituents, by a consortium of bacteria which are sensitive to or completely inhibited by oxygen. Using this process it is possible to convert agricultural wastes and manures into useful by-products.

As well as being a useful pollution control system there are additional advantages:-

  • The biogas may be used as an energy source.
  • Pathogens, both plant and animal, are virtually eliminated.
  • The fertiliser value of the waste is improved.
  • Offensive odours can be greatly reduced.
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