22:46wib
This University Pays Students Digital Currency to Use Its Toilets

Friday, 09-July-2021 22:00

illustration: public toilet
Image : Wikimedia
illustration: public toilet
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ULSAN, NETRALNEWS.COM - At a university in South Korea, using the toilet can pay you a cup of coffee or a banana.

The Ulsan National Institute of Science and Technology (UNIST) uses human waste to make the fuel needed for a building.

Cho Jae-weon, a professor of environmental and urban engineering at UNIST, succeeded in designing an environmentally friendly toilet connected to a laboratory that converts human waste into biogas and fertilizer.

The toilet is called BeeVi, from the words "bee" and "vision." The toilet uses a vacuum pump to drain feces into an underground tank, thus reducing water consumption. There, microorganisms break down the waste into methane gas, which is a source of energy for stoves or water heaters.

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"If we think about it unusually, feces are valuable for making energy and fertilizer. I've put that value into ecological circulation," said Cho.

The average person produces about 500 grams of feces a day, which can be converted into 50 liters of methane gas, Cho said. That much gas can generate 0.5 kW of electricity.

Everyone who uses BeeVi toilet gets 10 Ggool per day. With the digital currency, students can buy brewed coffee, instant noodles, fruits, or books at the campus canteen by scanning a QR code to pay with Ggool, as reported by Antara.

"I used to think that feces were dirty, but now I think of it as a precious treasure," said Heo Hui-jin, a graduate student. "I even talk about feces at mealtimes thinking about the book I want to buy."

Reporter : turkhan
Editor : turkhan