The sea bed could be one big battery.
Researchers name the microbes that could produce power by munching pollution.
Bacteria could clear up oil spills and generate electricity at the same time. US scientists have identified microbes that produce power as they digest organic waste1.
The bacteria strip electrons from carbon in ocean sediments to convert it into the carbon dioxide they need for metabolism and growth. Usually the organisms just dump the electrons onto iron or sulphate minerals on the ocean floor.
The Oregon team knew that the electrical energy was coming from microorganisms, but they didn’t know which creatures were involved. Now Derek Lovley of the University of Massachusetts at Amherst and colleagues have identified the culprits by making sediment batteries in the laboratory and analysing the bacteria clustered on one of the electrodes. The organisms belong to the family Geobacteraceae.
Lovley’s team also found that some freshwater-dwelling members of the family can do the same thing. These might be put to work in aquifers contaminated by oil or sewage, Lovley suggests.
Freshwater Geobacteraceae can break down petroleum in polluted groundwater on their own, but are often hampered by the lack of sufficient electron acceptors (such as the iron minerals). By providing these bacteria with an electrode that carts the electrons away, researchers could help bioremediation to proceed - and can capture a little electricity into the bargain.
PHILIP BALL | © Nature News Service
Despite government claims, orangutan populations have not increased. Call for better monitoring
06.11.2018 | Deutsches Zentrum für integrative Biodiversitätsforschung (iDiv) Halle-Jena-Leipzig
Increasing frequency of ocean storms could alter kelp forest ecosystems
30.10.2018 | University of Virginia
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
09.11.2018 | Event News
06.11.2018 | Event News
23.10.2018 | Event News
16.11.2018 | Health and Medicine
16.11.2018 | Life Sciences
16.11.2018 | Life Sciences