According to a recent article published by the International Herald Tribune, the city of Goteborg, Sweden is one of many cities throughout the country that is using sewage waste and transforming it into biogas to be used by thousands of cars, buses and other vehicles.

How Does it Work?

According to the article, biogas is actually the same as natural gas. The difference is in how it is manufactured, however. In order to make biogas, bacteria feed on fecal waste for approximately three weeks in an oxygen chamber, which results in two-thirds methane and one-third carbon dioxide. Once the methane is purified, it is pumped through Goteborg’s network of gas pipelines to specialized filling stations, where it is pressurized for delivery. Any car with an engine and tank configured for compressed natural gas can use biogas. After a vehicle fills up with biogas, a certain amount of the fuel is injected into the natural gas grid with the idea that the amount of gas used by vehicles is offset by the gas produced by organic waste.

What are the Benefits of Biogas?

• Tailpipe emissions are virtually odorless
• Fuel is cheaper than gasoline and diesel
• eco-friendly

According to one engineer at a sewage facility in Goteborg, what an average person flushes down a toilet each year creates enough biogas to drive 75 miles. Biogas is also available in Switzerland, France, Germany and Austria as well. Who knows; if the price of oil continues to go up, you might just see more people looking at their toilets and garbage in an entirely different way…

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Tags: Auto Transportation, alternative transportation, auto news //