Researchers in Norway have succeeded in getting bacteria to power a fuel cell. The "fuel" used is wastewater, and the products of the process are purified water droplets and electricity. This is an environmentally-friendly process for the purification of water derived from industrial processes and suchlike. It also generates small amounts of electricity -- in practice enough to drive a small fan, a sensor or a light-emitting diode. In the future, the researchers hope to scale up this energy generation to enable the same energy to be used to power the water purification process , which commonly consists of many stages, often involving mechanical and energy-demanding decontamination steps at its outset. Nature's own generator The biological fuel cell is powered by entirely natural processes -- with the help of living microorganisms. "In simple terms, this type of fuel cell works because the bacteria consume the waste materials found in the water," explains SINTEF...
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