Human Poop-Powered Bus Hits UK Roads | IFLScience #poobus #greencities

“You wouldn’t think that human poop has many uses, but it turns out that the UK is using brown to go green. As of today, Britain’s first “poo bus” will be shuttling passengers between the city of Bath and Bristol Airport. And yes, you guessed it: it’s powered by human waste, alongside food waste.This “Bio-bus” runs on biomethane gas, which is produced from the treatment of human sewage and food that is unsuitable for human consumption. It has a combustion engine that is similar to diesel engines in normal buses, but the gas is stored in dome-like tanks on the roof.

The gas is generated using anaerobic oxygen hating bacteria, which break down the waste into methane-rich gas. Before it can be used to power buses, CO2 is removed and propane is added. Other impurities are also removed so that the emissions are virtually odorless thank goodness. It also produces fewer overall emissions than traditional diesel engines, and is obviously more sustainable

.Just one person’s annual food and sewage waste is enough to fuel the bus for 60 kilometers 37 miles. One tank is sufficient for a 300 kilometer 186 mile journey, which is about five people’s annual waste.”

via Human Poop-Powered Bus Hits UK Roads | IFLScience.

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