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.
A UCT master’s student in civil engineering has unveiled the world’s first bio-brick grown from human urine, signalling an innovative paradigm shift in waste recovery. Read more: https://t.co/xBITiR08Lg pic.twitter.com/l6ob9uPdS1
— UCT (@UCT_news) October 25, 2018
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.