Convert excrement into cryptocurrencies? This toilet can do it and you will be surprised how

A self-sustaining building in South Korea works with excrement, which ends up being converted into cryptocurrencies. The idea was carried out by Cho Jae-won, head of the Science Walden design team, creating a toilet for this purpose.

No matter how eschatological it is read, it has its logic.

Cho is a professor of urban and environmental engineering at the Ulsan National Institute of Science and Technology (UNIST). In 2015 designed an eco-friendly toilet that connects to a laboratory, using excrement to produce biogas and manure.

The toilet is called BeeVi, as explained by Reuters in an interview with Cho this year. It is an acronym for the words bee and vision.

This is how cryptocurrencies are earned

The university students go to the building to relieve themselves. Thanks to a vacuum pump, the feces go to an underground tank, reducing the use of water.

Later, microorganisms break down the waste, turning it into methane. This is used as an energy source for the building, with which a gas stove, a hot water boiler and a solid oxide fuel cell are fed.

How are cryptocurrencies earned? Professor Cho created a virtual currency that can be used on the university campus. His name is Ggool, which means honey in Korean.

Each person who uses the toilet gets 10 Ggools a day, and with them they can buy whatever they want.

Professor Cho’s two ecological toilets

Professor Cho’s team worked on two toilets. The BeeVi Walden 1.0 is smaller than the usual toilets, and is basically the one that was used for the first experience at UNIST. This device turns the stool into a dry and odorless material, thanks to a dryer and a grinder at the bottom.

Among its basic characteristics, it stands out that the seat is reconfigured to allow a more natural posture for the user.

Engineers later created the Walden 2.0, which eliminated both the dryer and the grinding system. It is the current one in the self-sustaining building: its structure allows the faeces to be sucked like a vacuum cleaner, sending them to the energy production system.

Only 0.5 liters of water are required, an amount less than that of common services.

It also has an ultraviolet lamp that serves to disinfect the toilet bowl, seat and lid.

Natural energy

Cho explained to Reuters that the average person defecates about 500 grams a day, which can be converted into 50 liters of methane gas. This amount would generate 0.5 kWh of electricity, the equivalent of driving a car 1.2 kilometers.

“If we think outside the box,” Professor Cho noted, “feces have precious value for producing energy and manure. I have put this value in ecological circulation ”.

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