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Students from South Africa have developed sand and urine bio-bricks

Students from the University of Cape Town have developed a “first brick in the world”, which requires sand and human urine to be produced. The process resembles the one in which shells are formed. Sand is colonized by bacteria, after which a complex chemical reaction takes place, which fixes bulk material like cement.

The technology will allow the use of waste, it does not require high temperatures for firing and, as a result, does not result in the release of harmful substances into the atmosphere. The strength of biokirpich can be adjusted by changing the amount of introduced bacteria and the time spent on the fermentation process.

As CapeTown ETC notes , a few years ago, similar technology was tested in the USA, but artificial urine was used there. Students from South Africa call their design “liquid gold”. Will it be used, not specified.

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