One day, when the nature is called, your urine can be used better than being drawn down the toilet.
Instead, it can be an important component in the construction of a greener office or a new house.
In one of the latest innovations in the search for environmentally friendly building materials, university researchers in South Africa have created bricks using human urine.
Bio-bricks, the first of its kind in the world, hope to be a sustainable alternative to standard clay and concrete bricks.
Prototypes deniz grew deniz from urine using a technique similar to the natural formation of shells, which lasted for six to eight days.
The groundbreaking invention is the brainstorming of two Cape Town University students and a lecturer.
With a Water Research Council grant conducted by the government, the feasibility study was launched last year using synthetic urea. And then the study began to use human urine.
Görev I've always wondered why we didn't use urine to do the same thing, ığ Dyllon Randall, an instructor at one of the two students, told AFP.
”Simple answer: yap Yes, we can“.
A year later, they successfully produced their first bio-bricks in a laboratory.
Using a natural process known as microbial carbonate precipitation, they mix urine, sand and bacteria to make bricks.
The research is still in its early days. So far, the urine required by male students in the university requires 30 liters (eight US gallons) of urine to make just one brick with urine.
Ik We basically made the first bio-brick from real urine, Rand Randall said.
”This process is great, because what we've done has actually produced the bricks at room temperature.“
The first three bricks are on display. They are gray weighted blocks and are indistinguishable from any standard limestone.
Copying natural processes of nature
Suzanne Lambert, a graduate student in civil engineering, is astounded by how the team copied the süreç natural processes of nature Bir to build a sustainable structure.
”This process imitates the way the coral is shaped and natural processes produce a cement,“ he said.
Conventional bricks or clay bricks are produced in kilns dried at 1,400 degrees Celsius (2,500 Fahrenheit); this causes a large amount of CO2 emissions.
Conversely, bio-brick is-replicated enzim from loose-seeded seeds with bacteria producing an enzyme called urease.
Urea reacts with urea in urine to form a cement-like compound bound with sand.
The product can be molded in any way and dries at ambient temperatures – there are no ovens, no greenhouse gas emissions.
. We're getting something that is used as a waste stream, like urine, and we use it in a fully sustainable process, Rand Randall said.
The good news for those who are concerned about the smell of urine from the walls is that the brick doesn't smell. The strong smell of ammonia from the urine diffuses after a few days of drying.
Researcher Vukheta Mukhari said that the strength of the brick can be adapted to specific building conditions, but the products they produce so far are göre as strong as the common brick you find on the market Araştırma.
Bio-bricks have already been manufactured in the US, but use synthetic urine forms.
These are the first to use natural human waste.
Will bio-brick support the standard clay or concrete counterparts a day?
The key factor is the price, but no attempt has been made on the costs at this very early stage of development.
. We're still far from commercializing it as a full-scale system, ten said Randall, but said there was a lot of room for productivity gains.
Var We currently need between 20 and 30 liters to make a standard brick. It sounds like a lot, but don't forget that about 90 percent of the urine is actually water, gibi says Randall.
Ki We want to reduce the amount of urine we want to make a brick, and I'm sure it will get much better results over the next few years. “ NVG
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