Subscribe free to our newsletters via your
. 24/7 Space News .




ENERGY TECH
New battery uses microbes to turn sewage into energy
by Staff Writers
Washington (AFP) Sept 16, 2013


US scientists may have found a new way to produce clean energy by way of dirty water, according to a new study out 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 fertilizer 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.

As the bacteria consume the organic material, the microbes cluster around the negative electrode, throwing off electrons, which are captured in turn by the positive electrode.

"We call it fishing for electrons," said environmental engineer Craig Criddle, one of the lead authors of the study published this week in the Proceedings of the National Acadamy of Sciences (PNAS).

"You can see that the microbes make nanowires to dump off their excess electrons," Criddle added.

Scientists have long known of microbes, dubbed exoelectrogenic, that live in airless environments and are capable of "breathing" oxide minerals, instead of oxygen, to generate energy.

Over the past dozen years, several research groups have tried different approaches for transforming these microbes into bio-generators -- but it has proven difficult to harness this energy efficiently.

The researchers said their new model is simple, yet efficient, and can harness about 30 percent of the potential energy in the wastewater -- about the same rate as commercially available solar panels.

There is far less energy potential available in wastewater than the sun's rays, they concede, but say the process has an added benefit: it cleans the water. That means it could could be used to offset some of the energy currently being consumed to treat wastewater.

.


Related Links
Powering The World in the 21st Century at Energy-Daily.com






Comment on this article via your Facebook, Yahoo, AOL, Hotmail login.

Share this article via these popular social media networks
del.icio.usdel.icio.us DiggDigg RedditReddit GoogleGoogle




Memory Foam Mattress Review
Newsletters :: SpaceDaily :: SpaceWar :: TerraDaily :: Energy Daily
XML Feeds :: Space News :: Earth News :: War News :: Solar Energy News





ENERGY TECH
Bolivia to launch lithium-ion battery plant
La Paz, La Paz Department (AFP) Sept 08, 2013
Bolivia will launch South America's first plant producing lithium-ion batteries next year using Chinese technology, authorities said Sunday. "We are talking about a launch in April or May when we will be producing lithium-ion batteries on a trial scale," said National Resources Management Board chief Alberto Echazu. Bolivia has vast amounts of the rare mineral key to producing the latest ... read more


ENERGY TECH
Chang'e-3 lunar probe sent to launch site

Sixteen Tons of Moondust

Scientists say water on moon may have originated on Earth

Moon landing mission to use "secret weapons"

ENERGY TECH
Explosive flooding said responsible for distinctive Mars terrain

Upgrade to Mars rovers could aid discovery on more distant worlds

Investigating 'Coal Island' Rock Outcrop

Terramechanics research aims to keep Mars rovers rolling

ENERGY TECH
Voyager 1 spacecraft reaches interstellar space

Q and A: John Richardson and John Belcher on Voyager 1's crossing and interstellar exploration

Voyager 1 Spotted from Earth with NRAO's VLBA and GBT Telescopes

Iran looks to put Persian cat into space

ENERGY TECH
China civilian technology satellites put into use

China to launch lunar lander by end of year: media

China launches three experimental satellites

Medical quarantine over for Shenzhou-10 astronauts

ENERGY TECH
ISS Releases a White Stork and Awaits a Swan

Three astronauts back on Earth from ISS: mission control

ISS Crew Completes Spacewalk Preps

Russian cosmonaut set for space station mission resigns

ENERGY TECH
Russia launches three communication satellites

Arianespace remains the global launch services leader

Russian space official denies report of problem in Soyuz return

Lockheed Martin Atlas V To Launch Morelos-3 ComSat

ENERGY TECH
ESA selects SSTL to design Exoplanet satellite mission

Coldest Brown Dwarfs Blur Lines between Stars and Planets

NASA-funded Program Helps Amateur Astronomers Detect Alien Worlds

Observations strongly suggest distant super-Earth has water atmosphere

ENERGY TECH
Yahoo Japan develops 3D search engine-printer

GPS 3 And OCX Satellite Launch and Early Orbit Operations Successfully Demonstrated

'Terminator' polymer that regenerates itself

Northrop Grumman Delivers AEHF Flight 4 Antenna Precision Pointing Unit




The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA Portal Reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement,agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement