10 years from now there will be microbial electricity

Scientists have found that the energy produced by proteins on the surface of bacteria can be converted into electricity. This breakthrough discovery could help create a 'clean' source of electricity from bacteria.

Biologists at the University of East Anglia (UK) have created an artificial version of the bacteria living in the sea called Shewanella oneidensis. They then proceeded to introduce the bacteria into the holes on the liposomes or lipids.

Shewanella oneidensis can be exploited to generate bioelectricity.

The team examined how electrons move between electrolytes in the bacterial body and the minerals available outside. The results show that bacteria can transport electricity from its body to metals and minerals.

'Our research shows that proteins on the surface of bacteria can directly transfer electrons to minerals and create an electric current,' said Dr Tom Clarke, head of the study.

Scientists believe that bacteria have a great potential to produce biofuel batteries, using electricity generated from microbial processes that break down agricultural and domestic waste. In addition, bacteria can also be used for bioreactors to create a completely clean power source.

Future bio-batteries will be extremely useful in areas without sunshine. They can also be used to power portable electronic devices or electric cars.

Dr. Tom Clarke hopes that batteries based on the technology he is researching can be marketed within the next 10 years.