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Source: U.S. Department of Energy
Wikipedia: Anaerobic digestion is the breakdown of organic matter by bacteria in the absence of oxygen. Anaerobic digestors use the natural process of anaerobic digestion to treat waste, produce energy or both.
Anaerobic digesters have been around for a long time, and they are commonly used for sewage treatment and for managing animal waste. Increasing environmental pressures on waste disposal has increased the use of digestion as a process for reducing waste volumes and generating useful byproducts. It is a fairly simple process that can greatly reduce the amount of organic matter which might otherwise end up in landfills or waste incinerators. Read More
Source: wikipedia
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