Biodrying

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Biodrying is the process by which biodegradable waste is rapidly heated through initial stages of composting to remove moisture from a waste stream and hence reduce its overall weight.[1] It can take as little as 8 days to dry waste in this manner.[2] This enables reduced costs of disposal if landfill is charged on a cost per tonne basis. Biodrying may be used as part of the production process for refuse-derived fuels.

Biodrying does not however greatly effect the biodegradability of the waste and hence is not stabilised. Biodried waste will still break down in a landfill to produce landfill gas and hence potentially contribute to climate change. In the UK this waste will still imact upon councils LATS allowances.

[edit] See also

[edit] References

  1. ^ Choi, H.L., T.L. Richard, and Ahn, H.K. (2001) Composting high moisture materials: biodrying poultry manure in a sequentially fed reactor, Compost Sci. and Util. 9(4):303-311
  2. ^ Sugni, M., Calcaterra, E. & Adani, F. (2005) Biostabilization-biodrying of municipal solid waste by inverting air-flow, Bioresource Technology: 1331-7
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