Researcers At UWE Bristol Used Urine To Charge Mobile Phones Using Microbial Fuel Cells

Charge mobile phones using urine

7:54 AM, 25th July 2013
Electricity From Urine
Dr Ioannis Ieropoulos, Bristol Robotics Laboratory.

BRISTOL, UK: Scientists have developed a novel way of charging mobile phones using urine as the power source to generate electricity. Dr Ioannis Ieropoulos from UWE Bristol is an expert at harnessing power from unusual sources using microbial fuel cells. “We are very excited as this is world’s first, no-one has harnessed power from urine to do this so it’s an exciting discovery. Using the ultimate waste product as a source of power to produce electricity is about as eco as it gets,” said Ieropoulos.

“One product that we can be sure of an unending supply is our own urine. By harnessing this power as urine passes through a cascade of microbial fuel cells (MFCs), we have managed to charge a Samsung mobile phone. 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 re-using waste to create energy.

“So far the microbial fuel power stack that we have developed generates enough power to enable SMS messaging, web browsing and to make a brief phone call. Making a call on a mobile phone takes up the most energy but we will get to the place where we can charge a battery for longer periods. 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,” added Ieropoulos.

The microbial fuel cell converts organic matter directly into electricity using microorganisms. Essentially, the electricity is a by-product of the microbes’ natural life cycle, so the more they eat things like urine, the more energy they generate and for longer periods of time; so it’s beneficial to keep doing it. The electricity output from MFCs is relatively small and so far we have only been able to store and accumulate these low levels of energy into capacitors or super-capacitors, for short charge/discharge cycles. This is the first time we have been able to directly charge the battery of a device such as a mobile phone and it is indeed a breakthrough.

The scientists believe that the technology has the future potential to be installed into domestic bathrooms to harness the urine and produce sufficient electricity to power showers, lighting or razors as well as mobile phones.

© Bristol Robotics Laboratory News

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