HOME >> BIOLOGY >> NEWS
Engineer designs system to put wastewater to work

In the midst of the worldwide energy crisis, researchers at Washington University in St. Louis have been continuing their work on a microbial fuel cell that generates electricity from wastewater. Advances in the design of this fuel cell in the last year have increased the power output by a factor of 10 and future designs, already in the minds of the researchers, hope to multiple that power output by 10 times again. If that goal can be achieved, the fuel cell could be scaled up for use in food and agricultural industries to generate electrical power all with the wastewater that today goes right down the drain.

Lars Angenent, Ph.D., assistant professor of chemical engineering, and a member of the University's Environmental Engineering Science Program has devised a continually fed upflow microbial fuel cell (UMFC). In a paper published online in the Environmental Science Technology, Angenent describes how wastewater enters from the bottom of a system and is continuously pumped up through a cylinder filled with granules of activated carbon. Many previous microbial experiments used closed systems with a single batch of nutrient solution, but because this system is continuously fed from a fresh supply of wastewater, Angenent's UMFC has more applications for industry since wastewater is continually outputted during industrial production.

The organic matter in the wastewater provides food for a diverse community of bacteria that have developed a biofilm (a thick-layered colony of bacteria) on a simple electrode in the anode chamber. An inexpensive U-shaped proton exchange membrane inside the anode chamber separates the anode from the cathode.

As the bacteria feed on the organic material in the wastewater they release electrons to the anodic electrode. These electrons then move to the cathodic electrode via a copper wire. The formed protons are transferred through the membrane towards the cathode where they react with electrons and oxyge
'"/>

Contact: Tony Fitzpatrick
tony_fitzpatrick@wustl.edu
314-935-5272
Washington University in St. Louis
7-Aug-2006


Page: 1 2

Related biology news :

1. Wiley extends publishing partnership with the American Institute of Chemical Engineers
2. Engineered blood vessels function like native tissue
3. Engineered protein effective against Staphylococcus aureus toxin
4. Engineering professor receives prestigious NSF Career Award
5. 4th International Conference on Ethical Issues in Biomedical Engineering
6. AEA, UAlbany College of Nanoscale Science and Engineering to partner on CIRCA 07
7. Engineering the heart piece by piece
8. 2007 Amgen Biochemical Engineering Award
9. Engineers develop process to recycle unused paint by blending it into common plastics
10. National panel led by LSU Chancellor releases report on Corps of Engineers
11. Enzyme Engineering XIX

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/13/2017)... , April 13, 2017 UBM,s Advanced Design ... will feature emerging and evolving technology through its ... Summits will run alongside the expo portion of the ... panels and demonstrations focused on trending topics within 3D ... design and manufacturing event will take place June 13-15, 2017 ...
(Date:4/11/2017)... , April 11, 2017 NXT-ID, ... security technology company, announces the appointment of independent Directors Mr. ... to its Board of Directors, furthering the company,s corporate ... ... NXT-ID, we look forward to their guidance and benefiting from ...
(Date:4/4/2017)... NEW YORK , April 4, 2017   ... solutions, today announced that the United States Patent and ... The patent broadly covers the linking of an iris ... the same transaction) and represents the company,s 45 th ... our latest patent is very timely given the multi-modal ...
Breaking Biology News(10 mins):
(Date:10/9/2017)... ... October 09, 2017 , ... The Giving Tree ... products targeting the needs of consumers who are incorporating medical marijuana into their ... Phoenix, Arizona. , As operators of two successful Valley dispensaries, The Giving Tree’s ...
(Date:10/7/2017)... Phoenix, Arizona (PRWEB) , ... ... ... than 15 years’ experience providing advanced instruments and applications consulting for microscopy ... the in-house expertise in application consulting, Nanoscience Analytical offers a broad range ...
(Date:10/7/2017)... , Oct. 6, 2017  The 2017 Nobel ... three scientists, Jacques Dubochet, Joachim Frank ... in cryo-electron microscopy (cryo-EM) have helped ... the structural biology community. The winners worked with ... now routinely produce highly resolved, three-dimensional images of ...
(Date:10/6/2017)... ... 06, 2017 , ... On Tuesday, October 24th, ABC² (Accelerate ... first-ever adaptive clinical trial for glioblastoma (GBM). The featured speaker will be Dr. ... open to the public, but registration is required. , WHAT: ABC² Brain ...
Breaking Biology Technology:
Cached News: