British scientists on Tuesday reported they had harnessed the power of urine and were able to charge a mobile phone with enough electricity to send texts and surf the internet.
Researchers from the University of Bristol and Bristol Robotics Laboratory in south west England said they had created a fuel cell that uses bacteria to break down urine to generate electricity, in a study published in the Royal Society of Chemistry journal Physical Chemistry Chemical Physics.
"No one has harnessed power from urine to do this so it's an exciting discovery," said engineer Ioannis Ieropoulos.
"The beauty of this fuel source is that we are not relying on the erratic nature of the wind or the sun; we are actually reusing waste to create energy.
"One product that we can be sure of an unending supply is our own urine," he added.
The team grew bacteria on carbon fibre anodes and placed them inside ceramic cylinders.
The bacteria broke down chemicals in urine passed through the cylinders, building up a small amount of electrical charge which was stored on a capacitor.
Ieropoulos hoped that the cell, which is currently the size of a car battery, could be developed for many applications.
"Our aim is to have something that can be carried around easily," he explained.
"So far the microbial fuel power stack (MFC) that we have developed generates enough power to enable SMS messaging, web browsing and to make a brief phone call.
"The concept has been tested and it works - it's now for us to develop and refine the process so that we can develop MFCs to fully charge a battery."
They hope the technology will eventually be used to power domestic devices.
Explore further: Battery low? Give your mobile some water
© 2013 AFP
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Display comments: newest firstnot rated yet Jul 16, 2013 I think the big question is how this relates to other supplies like solar power. I bet it is cheaper and easier to make the same electricity by solar cell than using this chemical means.1.8 / 5 (5) Jul 16, 2013 The urine is there anyway, so why not get something from it? The question is not so much whether it is the most efficient way of generating electricity, but whether or not there are better uses for the urine that conflict with this use. 1.8 / 5 (4) Jul 16, 2013 Now the only hurdle is to make the urinal cake small enough.1 / 5 (4) Jul 17, 2013
Now the only hurdle is to make the urinal cake small enough.
Micro UC cards?not rated yet Jul 17, 2013 Pecunia non olet....
If there's a way to mass-produce a charger that could be used by hikers and survivalists, and/or to get a charge out of a human byproduct that in modern times just gets flushed, then more power to them... pun intended ;)
not rated yet Jul 17, 2013 Chemical, huh? I had envisioned a waterwheel built into a codpiece.1 / 5 (2) Jul 20, 2013 not rated yet Jul 21, 2013 Not stated was how long it takes to generate electricity. Is the intent some sort of emergency supply? Individual? Single use? Or larger, longer duration? How much maintenance is required?Did diuretics (like beer) play a part in any of this research?
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