Nanotech Coating Produces Electricity From Sewage
July 23, 2010 1:06 PM
comment(s) - last by
Could change the face of wastewater treatment
Oregon State University engineers have
applied new coatings
on anodes of microbial electrochemical cells, which heightens their electricity production by 20 times, and is another step closer to producing electricity from sewage.
The graphite anodes were coated with palladium at one point in order to produce electricity, but that didn't produce quite as much as the
of gold, which is what increased the electricity production by about 20 times. This is a huge advance toward technology that could both produce levels of electricity and clean biowaste at the same time, ultimately changing the face of
and wastewater treatment. Also, this sort of technology could help treat wastewater in developing nations where an inadequate power supply prevents proper treatment.
During the course of these experiments, researchers inserted bacteria from sewage into an anode chamber and allowed it to form a biofilm, absorb nutrients and grow. The bacteria releases electrons during this process and fuels electricity production.
"This is an important step toward our goal," said Frank Chaplen, an associate professor of biological and ecological engineering. "We still need some improvements in design of the cathode chamber, and a better understanding of the interaction between different microbial species. But the new approach is clearly producing more electricity."
In addition, researchers have reason to believe that an iron nanoparticle coating would increase the electrical output of sewage as much as the layer of gold in some types of bacteria. Also, a "similar approach" could produce hydrogen gas rather than electricity, which could lead to further advancements in
hydrogen fuel cell technology
for cars as well as treating wastewater.
"Recent advances in nanofabrication provide a unique opportunity to develop efficient electrode materials due to the remarkable structural, electrical and chemical properties of nanomaterials," said the published research paper. "This study demonstrated that nano-decoration can greatly enhance the performance of microbial anodes."
While more research is required to lower costs and improve efficiency, researchers say this technology has been proven in the laboratory.
was led by Hong Liu, an assistant professor of biological and ecological engineering, and was published in
Biosensors and Bioelectronics
This article is over a month old, voting and posting comments is disabled
RE: yeah right
7/28/2010 10:19:30 AM
Did you ever hear of the pregnancy test?
"Google fired a shot heard 'round the world, and now a second American company has answered the call to defend the rights of the Chinese people." -- Rep. Christopher H. Smith (R-N.J.)
New Systems of Nanoparticle Drug Delivery Developed
July 9, 2010, 11:32 AM
Study: 670,000 Fuel Cell Vehicles to be Sold Annually Within 10 Years
June 27, 2010, 8:23 PM
New Alloy Semiconductors Promise More Efficient Solar Panels
March 22, 2010, 10:33 AM
Star Wars Spinoff Film "Rogue One", Theme Park Attractions Announced
August 17, 2015, 12:20 PM
SpaceX Falcon 9's Seventh Supply Mission to ISS Ends w/ Fiery Stage 1 Explosion
June 28, 2015, 1:10 PM
Cool Science Video: Glowing Millipede Prowls the Nevada Desert
May 18, 2015, 12:00 PM
Newly Discovered Costa Rican Glass Frog is Kermit's Doppelgänger
April 22, 2015, 11:26 AM
Researchers Hope to Find "Exotic" Lifeforms Inside Crater of Dinosaur Killing Meteor
April 14, 2015, 8:47 PM
Mathematician's Sociological Formulation May Explain the "Hipster Paradox"
April 14, 2015, 1:13 PM
Most Popular Articles
Samsung Gear S2 Borrows Circular Icons From Apple Watch
August 21, 2015, 2:48 PM
Future of Lumia Uncertain as Microsoft Lays Off 2,300, Closes 1 of 3 Finnish Offices
August 24, 2015, 6:14 PM
Kentucky Man Faces up to 10 Years in Prison for Shooting Drone Trespasser
August 13, 2015, 2:58 PM
Microsoft's Windows 10 Leaves Lumia 530 Behind w/ 8 GB Storage Requirement
August 25, 2015, 4:02 PM
Aluminum 7003, Used in Roofing, May be Tapped by Apple for iPhone 6S/6S+
August 24, 2015, 4:45 PM
Latest Blog Posts
Sceptre Airs 27", 120 Hz. 1080p Monitor/HDTV w/ 5 ms Response Time for $220
Dec 3, 2014, 10:32 PM
Costco Gives Employees Thanksgiving Off; Wal-Mart Leads "Black Thursday" Charge
Oct 29, 2014, 9:57 PM
"Bear Selfies" Fad Could Turn Deadly, Warn Nevada Wildlife Officials
Oct 28, 2014, 12:00 PM
The Surface Mini That Was Never Released Gets "Hands On" Treatment
Sep 26, 2014, 8:22 AM
ISIS Imposes Ban on Teaching Evolution in Iraq
Sep 17, 2014, 5:22 PM
More Blog Posts
Copyright 2015 DailyTech LLC. -
Terms, Conditions & Privacy Information