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Want to know an amazing but gross thing ?

Some people in a university in my country (South Africa) have invented bricks made with urine.

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The young researchers managed to combine people’s urine, which had been collected from specially designed male urinals at the university’s engineering building, with sand and bacteria.


"The bio-bricks are created through a natural process called microbial carbonate precipitation, not unlike the way seashells are formed. Loose sand is colonized with bacteria that produce urease. The urease breaks down the urea in urine while producing calcium carbonate through a chemical reaction,” Senior Lecturer in Water Quality at UCT Dyllon Randall said, commenting on the matter.

“This cements the sand into any shape, whether a solid column or, now for the first time, a rectangular building brick,” he added.
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Should I be proud of that or embarrassed ?
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windinhishair · 61-69, M
Sounds like a great idea. Human wastewater is already used to generate methane and used for power. Nitrogen and phosphorus can be removed and sold as byproducts, and the remaining biosolds are an excellent soil amendment once they are treated. Effluent can be used for irrigation or even as a feedstock for water treatment facilities to produce drinking water. So urine bricks are just another beneficial use of what is really a resource.
Wraithorn · 56-60, M
@windinhishair Thanks for a lovely answer. I did see mention of the byproducts of the process being useful for fertilisers etc. I think it's a good thing.
windinhishair · 61-69, M
@Wraithorn It is a very good thing to be able to take waste material and beneficially use it. As the world population increases, we'll need to make greater use of human waste worldwide for some of the things I mentioned. It results in less use of other resources.
Wraithorn · 56-60, M
@windinhishair True that. Our world population is growing at a shocking rate. It seems to be one of the side effects of the benefits of science and medicine. Now science is helping to turn our Human Bullsh*t into a useful thing.
windinhishair · 61-69, M
@Wraithorn In some ways it is a return to the way things were done in antiquity. Human waste was often used in rice production and other farming as a fertilizer, but without the processing we put it through today. Now we have to control the methane, because it is a greenhouse gas like carbon dioxide, but 23 times more powerful.
Wraithorn · 56-60, M
@windinhishair I hear tell urine was also used for tanning leather also. Apparently it was quite useful, yes. We're going back to our roots by using technology. That's a weird thought.
windinhishair · 61-69, M
@Wraithorn Yes, it was used for tanning leather, and in cosmetics, medicine, and for cleaning purposes, among others.

https://www.theguardian.com/commentisfree/2011/mar/10/unusual-uses-of-urine