New battery uses microbes to turn sewage into energy
WASHINGTON (AFP) - US scientists may have found a new way to produce clean energy by way of dirty water, according to a new study out on Monday.
The engineers have developed a more efficient method to use microbes to harness electricity from wastewater.
They hope their technique could be used in wastewater treatment facilities and to break down organic pollutants in the "dead zones" of oceans and lakes where fertiliser runoff has depleted oxygen, suffocating marine life.
However, for now the team from Stanford University have started small, with a prototype about the size of a D-cell battery, consisting of two electrodes - one positive and one negative - plunged into a bottle of wastewater, filled with bacteria.