Wednesday, 16 November 2011

Gates Foundation funds composting toilet

Enter Marc Deshusses, a Duke University environmental engineer who has envisioned an innovative yet simple waste disposal system designed specifically for Third World countries that can be constructed from everyday items.

According to Deshusses, for less than $100 and a day's work a single family in an undeveloped country can construct a solid waste disposal system that processes the waste, requires no electricity or additional energy and destroys harmful pathogens.

In the system Deshusses is developing, the waste is directed to a chamber, most likely constructed of PVC pipe. Once sealed in the chamber, an oxygen-free, or anaerobic, environment is created and bacteria digest the waste. As a byproduct of this digestion, methane gas is produced. Instead of the methane escaping into the environment, the new approach captures and burns it, creating enough heat to kill the bacteria and viruses most commonly found in effluence.

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