27 Dec '11, 9pm

Waste going to good use! - 'Poop to power' program turns pig manure into sustainable energy

Waste going to good use! - 'Poop to power' program turns pig manure into sustainable energy

The system has several components. First, the hog waste is placed in an anaerobic digester, which contains bacteria that consume the manure and release methane gas. The methane is then burned to power a 65-kW microturbine, which generates electricity to power support the entire waste management system and much of the farm's normal operations. After the manure is processed in the digester, liquid waste enters an aeration bin, where it is treated for ammonia and other pollutants. The resulting water can be used for irrigation or for flushing out barns. By the time the system is done, it has met all of North Carolina's environmental standards for reduction of odors and emissions.

Full article: http://www.mnn.com/earth-matters/energy/stories/poop-to-p...

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