New process makes bricks from urine

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Here at Springwise, we have seen bio-waste used in an increasing number of innovations. These have included a house made from farm waste and textiles made from live organisms. Now, civil engineering students at the University of Cape Town have created bricks using human urine. The bio-bricks were created using a natural process called microbial carbonate precipitation. This is similar to the way seashells are formed. The bio-brick process involves colonising loose sand with bacteria that produce the enzyme urease. The urease breaks down the urine to produce calcium carbonate (the materials shells are made of). The calcium carbonate acts…

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