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South African students make human urine bricks from “liquid gold”

ITN News Editor
By ITN News Editor November 3, 2018 13:24

South African students make human urine bricks from “liquid gold”

Going to the toilet to pee could result in building materials for a new home if South African researchers who made the world’s first bio-brick from “liquid gold” have their way, the brick’s pioneer said on Friday (November 2).Made with human urine, the odorless, grey brick is produced in a lab over eight days using urine, sand and bacteria. The same process is used to produce fertilizers. The concept of using urea to grow bricks has been tested in the United States using synthetic solutions, but UCT says the new bio-brick uses real human urine for the first time.The bricks are created through a natural process called microbial induced carbonate precipitation, similar to how coral reefs are formed. To make a brick, loose sand is “colonized” with bacteria that produce the enzyme urease, which in turn breaks down the urea in urine while producing calcium carbonate through a complex chemical reaction. One can make a brick of any shape using this process.

ITN News Editor
By ITN News Editor November 3, 2018 13:24
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