Bacteria helps turn waste to power

Bacteria helps turn waste to power

Bacteria that generate power could be used in microbial fuel cells to convert waste into electricity. University of Massachusetts researchers isolated bacteria with large numbers of tiny projections called pili which transfer electrons to generate power in fuel cells, more efficiently than counterparts with a smooth surface.
The researchers isolated a strain of Geobacter sulfurreducens which they called KN400 that grew prolifically on the graphite anodes of fuel cells.
The bacteria formed a thick bio-film on the anode surface, which conducted electricity. The researchers found large quantities of pilin, a protein that makes the tiny fibres that conduct electricity through the sticky bio-film.