Tuesday, February 17, 2009

Uses of Small Scale Anaerobic Digesters

The use of anaerobic digesters on a small scale could provide localized energy sources. while reducing the negative effects of greenhouse gases. While many technologies appear to answer some of these requirements, anaerobic digestion is an especially promising technology as it is efficient, inexpensive and can be quickly scaled and implemented.

In engineered anaerobic digesters, the digestion of organic waste takes place in a special reactor, or enclosed chamber, where critical environmental conditions such as moisture content, temperature and pH levels can be controlled to maximize gas generation and waste decomposition rates. Commercial anaerobic digestion systems can replicate this natural process in an engineered reactor that produces methane gas much more quickly, in as little as two to three weeks compared to the 30 to 100 years required by the anaerobic conditions in a landfill.

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