Navigation Links
Stanford researchers use river water and salty ocean water to generate electricity
Date:3/29/2011

Stanford researchers have developed a battery that takes advantage of the difference in salinity between freshwater and seawater to produce electricity.

Anywhere freshwater enters the sea, such as river mouths or estuaries, could be potential sites for a power plant using such a battery, said Yi Cui, associate professor of materials science and engineering, who led the research team.

The theoretical limiting factor, he said, is the amount of freshwater available. "We actually have an infinite amount of ocean water; unfortunately we don't have an infinite amount of freshwater," he said.

As an indicator of the battery's potential for producing power, Cui's team calculated that if all the world's rivers were put to use, their batteries could supply about 2 terawatts of electricity annually that's roughly 13 percent of the world's current energy consumption.

The battery itself is simple, consisting of two electrodes one positive, one negative immersed in a liquid containing electrically charged particles, or ions. In water, the ions are sodium and chlorine, the components of ordinary table salt.

Initially, the battery is filled with freshwater and a small electric current is applied to charge it up. The freshwater is then drained and replaced with seawater. Because seawater is salty, containing 60 to 100 times more ions than freshwater, it increases the electrical potential, or voltage, between the two electrodes. That makes it possible to reap far more electricity than the amount used to charge the battery.

"The voltage really depends on the concentration of the sodium and chlorine ions you have," Cui said. "If you charge at low voltage in freshwater, then discharge at high voltage in sea water, that means you gain energy. You get more energy than you put in."

Once the discharge is complete, the seawater is drained and replaced with freshwater and the cycle can begin again. "The key thing here is
'/>"/>

Contact: Louis Bergeron
louisb3@stanford.edu
650-725-1944
Stanford University
Source:Eurekalert  

Page: 1 2 3

Related biology technology :

1. Vermillion and Stanford Scientists Receive Best Research Award From the PAD Coalition
2. Stanford: Quantum computing spins closer
3. Cell Biosciences Delivers Next Generation System to Stanford University
4. Artemis Health Licenses Prenatal Cell-Free DNA Analysis Technology from Stanford University
5. Stanford writes in worlds smallest letters
6. Kornberg Associates Architects Selected to Develop Design for New Stanford University Imaging Center
7. Stanford researchers find a quicker, cheaper way to sort isotopes
8. Eiger BioPharmaceuticals Acquires Exclusive License to Novel Hepatitis C Virus (HCV) Technology From Stanford University
9. LASIK Expert Edward Manche, M.D., of the Stanford Eye Laser Center Joins Top Surgeons Listed at the Trusted LASIK Surgeons Directory
10. New technique reinforces immune cells that seek and destroy cancer, says Stanford researcher
11. Stanford scientists develop new way to grow adult stem cells in culture
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Stanford researchers use river water and salty ocean water to generate electricity
(Date:9/30/2014)... , Sept. 30, 2014 FemCap Inc., ... health announces its receipt of a patent No: US, ... cup has also received FDA clearance in the U.S., ... the CE in Europe. This patent is related to its ... this issuance, the company is releasing FemmyCycle Teen, a ...
(Date:9/30/2014)... SoundConnect, an award ... dedicated to supporting business communication solutions, including business ... a carrier services specialist has joined ... connected and productive at all times. This growth ... businesses to cloud communications services. On a ...
(Date:9/30/2014)... 2014 Back in the 1970’s, many companies ... per employee, which included space for circulation and file storage. ... Howell, partner at Nidea Corporate Real Estate / ITRA ... the year 2000, however, 250 square feet per employee ... come down to 175 to 225 square feet, and over ...
(Date:9/29/2014)... Sept. 29, 2014  Ten of the most ... cartilage repair, regeneration, allograft reconstruction and research and ... world gathered to discuss the future of cartilage ... Regenerative Medicine symposium, Cartilage Regeneration: State of ... Orthopedic Biosurgery, Minced Juvenile Allograft, and State of ...
Breaking Biology Technology:The FemmyCycle 2SoundConnect Expands Carrier Services Division 2ITRA Global Reports on How Companies Are Squeezing More Employees into Less Office Space 2ITRA Global Reports on How Companies Are Squeezing More Employees into Less Office Space 3World Renowned Experts Discuss Future Of Cartilage Regeneration 2World Renowned Experts Discuss Future Of Cartilage Regeneration 3
... Ill., June 30 Hospira, Inc. (NYSE: ... company, today announced agreements with MedAssets on intravenous (I.V.) ... its agreement for infusion devices. The five-year MedAssets agreements ... solutions and equipment, and July 1, 2009, for infusion ...
... needs, clinical uses and funding sources , , ROCKVILLE, ... in Rockville, Md., announced today that former Secretary of the ... board of directors. , , "I am excited ... battlefield and in emergency rooms throughout the US. I am ...
... Limited, the decentralised and point-of-care molecular diagnostics company, announced today ... Veterinary Laboratories Agency to evaluate the performance of the Enigma ... be one of the main threats to cattle (1), affecting ... closely related to classical swine fever virus, a serious disease ...
Cached Biology Technology:Hospira Announces New Contract With MedAssets for Intravenous Solutions, Renewal of Infusion Devices Agreement 2Former Secretary of Veterans Affairs James Peake to Join the Cellphire Board of Directors 2Enigma Diagnostics Announces Successful Evaluation of the Enigma FL by the UK's Veterinary Laboratories Agency 2Enigma Diagnostics Announces Successful Evaluation of the Enigma FL by the UK's Veterinary Laboratories Agency 3
(Date:9/30/2014)... drinking water may increase the risk of stillbirth ... led by a Boston University School of Public ... journal Environmental Health , compared 1,091 PCE-exposed ... in Cape Cod, Ma., where water was contaminated ... by the installation of vinyl-lined asbestos cement pipes. ...
(Date:9/30/2014)... involving mice and published in the October 2014 issue ... , suggests that just because you can do it, ... of Italian scientists have found that using marijuana in ... system. This damage may result in autoimmune diseases and ... disease and rheumatoid arthritis in adulthood. , "I hope ...
(Date:9/30/2014)... , Sept. 30, 2014  Spectra ... solutions for the biotech and power generation ... new RECONN Bioprocess Manager, an easy-to-use and ... geared towards bioprocess development laboratories. ... disparate bioreactor and analyzer systems. Accessing and ...
Breaking Biology News(10 mins):Contaminated water linked to pregnancy complications, BU study finds 2Adolescent exposure to thc may cause immune systems to go up in smoke 2Spectra Automation Introduces RECONN Bioprocess Manager 2
... blood cell production and function will today be awarded ... Council,s (NHMRC) program grants scheme. The nine ... securing $107 million in program grant funding will be ... the Federal Minister for Mental Health and Ageing, the ...
... Parachin and the secret of her technique is enzymes that ... made from xylose then ethanol production could increase by over ... friendly fuel. Ethanol is manufactured by fermenting sugars from ... the second most common type of sugar found in nature. ...
... -- Software agents on assignment . . . ... organization,s network could be more secure with a system ... Oak Ridge National Laboratory,s Computational Sciences and Engineering Division. ... are being copied, excerpted, changed and stored in various ...
Cached Biology News:$38.4M NHMRC program grants extend cancer and blood cell research 2Enzymes from garden compost could favour bioethanol production 2Story tips from the US Department of Energy's Oak Ridge National Laboratory March 2011 2
... Motic's B3 series of microscopes offer ... microscope required for laboratory work. Equipped with ... Super Contrast (ASC) objectives. The B3 is ... The Siedentopf binocular tube eliminates the need ...
... SYBR Green II RNA gel ... gel stain that has bright fluorescence when ... gels, making it ideal for use with ... scanners or standard UV transilluminators. A 500 ...
... SYBR Green II RNA gel stain ... has bright fluorescence when bound to RNA and ... use with either formaldehyde/agarose or polyacrylamide gels using ... stains 100 minigels. A 500 µL unit size ...
... Glutathion-S-transferases (GST) are a group ... the detoxification processes. The GSTs are ... Pi, Teta and microsomal. The classes ... and s Sample Size: ...
Biology Products: