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:1/22/2015)...   GenoSpace , a precision medicine software company that has ... use of genomic, imaging and other biomedical data in research ... Munson , CEO of Aspera, an IBM Company, to its ... http://photos.prnewswire.com/prnh/20150122/170713 "We are pleased to welcome ...
(Date:12/25/2014)... December 25, 2014 The report “Service ... Product Type & Provider Type - Global Advancements, Worldwide ... with an in-depth analysis and forecasting of revenues. ... through 221 pages and in-depth TOC on “Service Quality ...
(Date:12/24/2014)... YORK , Dec. 24, 2014 PlasmaTech Biopharmaceuticals, Inc. ... critical areas, announced the closing of an underwritten public offering ... up to an aggregate 3,500,000 shares of common stock, at ... warrant.  The warrants have a per share exercise price of ...
(Date:12/24/2014)... , Dec. 24, 2014   BioLife Solutions , Inc. ... marketer of proprietary clinical grade hypothermic storage and ... products for cells and tissues  ("BioLife" or the "Company"), ... of Stockholders on May 4, 2015 (the "Annual Meeting"). ...
Breaking Biology Technology:GenoSpace Expands Board with Appointment of Michelle Munson 2Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 2Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 3Service Quality Management Market worth $2.1 Billion & Telco Customer Experience Management Market worth $2.3 Billion by 2019 – New Report by MarketsandMarkets 4PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3BioLife Solutions Sets Date for Annual Meeting of Stockholders 2
... , , , , ... of purifying amplicons as small as 100bp. AMPure yields high quality PCR , ... or filtration steps. The protocol can be easily automated or performed , ... , EFFICIENT PCR PURIFICATION ...
... , , , , Here are some troubleshooting hints that we have gathered , ... , , , , ... <a , href="#Option4">Primer annealing temperature is too low ... , , ...
... , , , , , , ... PCR primers , that are specific for that mRNA sequence. The ... of cDNA and an amplified , product derived from contaminating genomic ... (see figure below). , , , , , ...
Cached Biology Technology:AMPURE PURIFICATION SYSTEM 2AMPURE PURIFICATION SYSTEM 3Trouble-shooting: Smeared bands 2Trouble-shooting: Smeared bands 3Trouble-shooting: Smeared bands 4Trouble-shooting: Smeared bands 5
(Date:12/22/2014)...  The 2014 Holiday Season may be the brightest ever ... that the long anticipated floodgates for consumer biometrics may ... smart phones, tablets, and wearable mobile devices that incorporate ... users with nearly 4.8 billion biometric devices by 2020.   ...
(Date:12/19/2014)... VEGAS , Dec. 18, 2014   LaunchKey , ... for the post-password and Internet of Things era, today ... funding. The venture round was led by Metamorphic Ventures ... Rimrock Venture Partners, VegasTechFund, and others.  LaunchKey has raised ...
(Date:12/17/2014)... , Dec. 16, 2014 Valencell, a leader ... PerformTek biometric technology to industry leaders such as Intel, ... clinically validated, biometric wearable products. These products will be ... Las Vegas . ...
Breaking Biology News(10 mins):First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3Valencell PerformTek Biometrics Power the Most Accurate Wearables at CES 2015 2
... variety of canary seeds bred specifically for human consumption qualifies ... with celiac disease (CD), scientists have confirmed in a study ... . Joyce Irene Boye and colleagues point out ... alone have CD. They develop gastrointestinal and other symptoms from ...
... A Cornell University study offers further proof that the divergence ... years ago was profoundly influenced by mutations to DNA sequences ... The study, published June 9 in Nature Genetics , ... must play an important role in evolution since there is ...
... June 19, 2013 Elsevier, a world-leading provider of scientific, ... announce the launch of a new open access journal, ... , Elsevier,s earth and planetary science journals portfolio has its ... a forum for rapid publication of top research within the ...
Cached Biology News:New research backs theory that genetic 'switches' play big role in human evolution 2New research backs theory that genetic 'switches' play big role in human evolution 3
Functionally tested for consistent G-banding of chromosomes....
... optimized for serum-free growth of Ready-Plaque Sf9 ... medium, Sf9 cultures routinely reach densities greater ... above 95%. This medium is also recommended ... staining of pBACgus recombinants develops faster than ...
... is formuatled for the growth of ... Sf21 cells. Grace's Insect Mediu, Unsupplemented ... does not contain lactalbumin hydrosylate, and ... Grace's Insect Medium, Supplemented is formulated ...
TNM-FH Insect Medium 1 liter...
Biology Products: