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The Car That Runs on Human Waste - Bio-Bug

The Bio-Bug has been converted by a team of British engineers to be powered by biogas, which is produced from human waste at sewage works across the country. They believe the car is a viable alternative to electric vehicles. Excrement flushed down the lavatories of just 70 homes is enough to power the car for 10,000 miles - the equivalent of one average motoring year.

The Bio-Bug is a conventional 2 litre VW Beetle convertible, which has been modified to run on both conventional fuel and compressed methane gas. The car is started using unleaded petrol but automatically switches to methane when the engine is "up to temperature". If the methane tank runs out the Bio-Bug reverts back to petrol. Around 18 million cubic metres of biogas is produced from human waste every year at Wessex Water's sewage treatment works in Avonmouth, Bristol. The gas is generated through anaerobic digestion - where bugs which are starved of oxygen break down biodegradable material to produce methane.

Telegraph

Posted by | Fri, Aug 06, 2010 - 10:42 AM