Navigation Links
Wastewater produces electricity and desalinates water
Date:8/14/2009

pical microbial fuel cell consists of two chambers, one filled with wastewater or other nutrients and the other with water, each containing an electrode. Naturally occurring bacteria in the wastewater consume the organic material and produce electricity.

The researchers, who also included Xiaoxin Cao, Xia Huang, Peng Liang, Kang Xiao, Yinjun Zhou and Xiaoyuan Zhang, at Tsinghua University, Beijing, changed the microbial fuel cell by adding a third chamber between the two existing chambers and placing certain ion specific membranes -- membranes that allow either positive or negative ions through, but not both -- between the central chamber and the positive and negative electrodes. Salty water to be desalinated is placed in the central chamber.

Seawater contains about 35 grams of salt per liter and brackish water contains 5 grams per liter. Salt not only dissolves in water, it dissociates into positive and negative ions. When the bacteria in the cell consume the wastewater it releases charged ions -- protons -- into the water. These protons cannot pass the anion membrane, so negative ions move from the salty water into the wastewater chamber. At the other electrode protons are consumed, so positively charged ions move from the salty water to the other electrode chamber, desalinating the water in the middle chamber.

The desalination cell releases ions into the outer chambers that help to improve the efficiency of electricity generation compared to microbial fuel cells.

"When we try to use microbial fuel cells to generate electricity, the conductivity of the wastewater is very low," said Logan. "If we could add salt it would work better. Rather than just add in salt, however in places where brackish or salt water is already abundant, we could use the process to additionally desalinate salty water, clean the wastewater and dump it and the resulting salt back into the ocean."

Because the salt in the water helps the cell gen
'/>"/>

Contact: A'ndrea Elyse Messer
aem1@psu.edu
814-865-9481
Penn State
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Anthrax vaccine produces immunity with nanoparticles, not needles
2. Anthrax vaccine produces immunity with nanoparticles, not needles
3. CHOP-Zevalin(R) Investigational Regimen Produces 95% Complete Remission and 75% Estimated Two Year Progression-Free Survival in Elderly Patients with Diffuse Large B-cell Lymphoma
4. Novel Investigational Regimen Combining Radiation Enhancing Agent With Ibritumomab Tiuxetan (Zevalin(R)) Produces High Rate of Complete Responses in Patients With Rituximab-Refractory Follicular Non-Hodgkins Lymphoma
5. New technique produces genetically identical stem cells
6. Pioneering IVF Technique Produces Region's First Pregnancy
7. PAREXEL Consulting Quantifies Speed to Market: First-Cycle Approval for NME Produces $640 Million in Incremental Revenue on Average
8. High-Dose Zevalin(R) With Tandem Stem Cell Infusion Produces 87 Percent Overall Survival in Relapsed/Refractory or High Risk Non-Hodgkins Lymphoma
9. New small-scale generator produces alternating current by stretching zinc oxide wires
10. Genomatica Produces Pure BDO From Natural Sugars
11. Knee brace generates electricity from walking
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Wastewater produces electricity and desalinates water
(Date:10/1/2014)... The participants committed to not only creating unique business ... adjusting, tweaking and testing virtual models and 3D test ... , “I enjoyed being involved as a judge,” stated ... showed a commendable range exploring the technical capabilities of ... and the creativity of the contestants.” , Array Architects ...
(Date:10/1/2014)... VA (PRWEB) October 01, 2014 ... Diagnostic, Clinical Therapeutics, Healthcare IT, and Laboratory Testing industries, ... regulatory positions at the director level and above from ... struggling to stay on top of rapid breakthroughs in ... result, many diagnostic companies have been forced to fold, ...
(Date:9/30/2014)... release is available in German . ... around several quantum dots in a semiconductor layer. Quantum dots ... of atomic processes. If a short laser pulse is fired ... the quantum dot experiences a change in the electromagnetic field ... the emission of light by the dot. As soon as ...
(Date:9/30/2014)... Report Details Biosimilar drugs – ... Do you want to find sales potentials of ... for those biological drugs from 2014, helping you ... data, R&D trends, opportunities and selling prospects. In ... 2024 at overall world market, therapeutic class, molecule ...
Breaking Biology Technology:Array Architects Challenges Staff to Create with 3D Printer 2Slone Partners Meets Growing Demand as Industry Focuses on Reimbursement & Regulation 2Ultrafast remote switching of light emission 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 3Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 4Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 5
... class of ultraviolet photodiode could help meet the U.S. ... to detect anthrax and other bioterrorism agents in the ... which are bulky, fragile and require a lot of ... a complex filter so that they only detect the ...
... VANCOUVER, BC, Aug. 8 /PRNewswire-FirstCall/ - Chromos ... today that the Supreme,Court of British Columbia ... Order"),dated August 8, 2008 in connection with ... "Arrangement") involving, among others, the,Company, Calyx Bio-Ventures ...
... 8 Inverness Medical,Innovations, Inc. (Amex: IMA ... health management solutions, is featuring its,new TB diagnostic ... AIDS,conference (AIDS 2008)., The test, which was ... a much needed aid in the diagnosis of ...
Cached Biology Technology:Avalanche photodiodes target bioterrorism agents 2Avalanche photodiodes target bioterrorism agents 3Chromos obtains interim order in connection with arrangement, announces annual and special meeting of shareholders and confirms mailing of information circular 2Chromos obtains interim order in connection with arrangement, announces annual and special meeting of shareholders and confirms mailing of information circular 3Inverness Medical Innovations Features Innovative TB Diagnostic - Clearview(R) TB ELISA at AIDS 2008 2
(Date:9/30/2014)... September 30, 2014--Sea monkeys have captured the popular attention ... easily observable life cycle -- sold as dehydrated eggs, ... given little more than a tank of salt water. ... pattern: Like other zooplankton, brine shrimp vertically migrate in ... closer to the surface at night and retreating deeper ...
(Date:9/30/2014)... and engineers, led by Clemson University associate professor ... grant from the U.S. Department of Energy,s Experimental ... direct positive impact on South Carolina in the ... contaminants. , "Understanding the scientific and engineering needs ... of nuclear technologies is imperative if South Carolina ...
(Date:9/30/2014)... in almost any aquatic environment on Earth, but when ... are pushed to the limit. The amount of time ... for how different species cope in the future, reveals ... Gothenburg, published in the scientific journal Proceedings of ... apace thanks to increasing levels of greenhouse gases in ...
Breaking Biology News(10 mins):Laser-guided sea monkeys show how zooplankton migrations may affect global ocean currents 2Researchers get $5.25 million to advance nuclear technologies in South Carolina 2Shape up quickly -- applies to fish, too! 2
... A new study reconstructing thousands of years of ... prescribed fire, or controlled burns, as a tool to reduce ... protect rare ecological communities in the region,s forests. ... samples dating from 1977 to more than 4,000 years ago ...
... 2010 -- Spectacularly increased yields and improved taste have ... the Robert H. Smith Faculty of Agriculture, Food and ... Harbor Laboratory (CSHL), New York. The researchers have ... controls when plants make flowers and that works in ...
... to measure blood flow in the lungs of people who ... most at risk of emphysema before the disease damages and ... of Iowa study. The study found that smokers who ... lung function, have very different blood flow patterns in their ...
Cached Biology News:4,000-year study supports use of prescribed burns in Southern Appalachians 24,000-year study supports use of prescribed burns in Southern Appalachians 3Genetic key discovered to dramatically increase yields and improve taste of hybrid tomato plants 2Genetic key discovered to dramatically increase yields and improve taste of hybrid tomato plants 3New test could identify smokers at risk of emphysema 2
GeneRacer is an advanced RACE (rapid amplification of cDNA ends) technique that improves the efficiency of amplifying full-length 5' and 3' cDNA ends. With the GeneRacer Kit you can:...
Mouse Wnt-9b Affinity Purified Polyclonal Ab Keywords: Wnt 9b Protein Family: Cancer Stem Cell Markers, Wnt Ligands...
One-step, microplate or cuvet, colorimetric, linear detection range 0.6 mM to 100 mM. Procedure: 2 min....
One-step, microplate or cuvet, colorimetric, linear detection range 6 mg/dL to 100mg/dL. Procedure: 15 min....
Biology Products: