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Quote of the day

Just because something doesn’t do what you planned it to do doesn’t mean it’s useless.

 

Thomas Edison

Giving waste water the power to clean itself

RATE THIS! +1
Posted in Science on 2nd Mar, 2012 07:21 PM by APM

A technique that combines two novel forms of renewable energy — one relying on bacteria and the other on salt water — generates more electricity than either one alone and cleans waste water at the same time.

 

The Pennsylvania State University researchers show that this configuration can achieve maximum power densities of 3 watts per meter squared, much higher than either technology can achieve on its own.

 

One method for converting this energy to a useable form is to use microbial fuel cells (MFC). These generate electricity by using cultures of microorganisms to break down and oxidize organic matter, a process that releases electrons that migrate towards a positive electrode.

 

To boost the power density of the MFC system, the researchers added a second process, called reverse electrodialysis (RED), in which the salinity gradient between fresh water and sea water is harnessed to generate electricity.

 

The researchers’ system, called a microbial reverse-electrodialysis cell (MRC), sandwiches a reverse electrodialysis (RED) stack made up of only a few pairs of membranes between the two chambers of an MFC, where the proton-exchange membrane would normally be.
 



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Comments

Author: Guest
Posted: 2013-11-22
+0
Dec10 Have you given any kind of consideration at all with trnntlasiag your web site in to German? I know a few of translaters right here that might help you do it for no cost if you wanna make contact with me personally. Reply


 

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