Aug 16, 2011
Science Scene - Waste Not
Nassef built a ZLD prototype in 2004 from washing-machine parts and a five-gallon paint bucket. The current version, his 11th update, uses only as much energy as ten 100-watt lightbulbs, sterilizes waste without any of the harsh chemicals of other portable toilet-waste-disposal systems, and can be scaled up or down. In 2007 it earned a certificate of approval from the U.S. Coast Guard for marine sanitation devices.