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![](https://webarchive.library.unt.edu/eot2008/20090508065242im_/http://www.nsf.gov/images/x.gif) Press Release 07-168 Microbes Churn Out Hydrogen at Record Rate
![](https://webarchive.library.unt.edu/eot2008/20090508065242im_/http://www.nsf.gov/images/greenlineshort.jpg)
In new table-top reactor, bacteria from wastewater produce abundant, clean hydrogen from cellulose, or even vinegar, and a little electricity
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![In a microbial electrolysis cell, bacteria break up fermented plant waste to form hydrogen](https://webarchive.library.unt.edu/eot2008/20090508065242im_/http://www.nsf.gov/news/mmg/media/images/biohydrogen_f.jpg) |
Researchers have designed a microbial electrolysis cell in which bacteria break up acetic acid (a product of plant waste fermentation) to produce hydrogen gas with a very small electric input from an outside source. Hydrogen can then be used for fuel cells or as a fuel additive in vehicles that now run on natural gas.
Credit: Zina Deretsky, National Science Foundation |
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![A microbial electrolysis cell (MEC) shown with a power source used to boost bacterial coltage.](https://webarchive.library.unt.edu/eot2008/20090508065242im_/http://www.nsf.gov/news/mmg/media/images/beamr%20reactor%20new%20005-to%20NSF2.jpg) |
A microbial electrolysis cell (MEC) shown with the power source used to augment the voltage produced by the bacteria. Bacteria grow in the anode chamber, forming a biofilm on graphite granules, while hydrogen gas is released at the cathode and bubbles up and into the tube on top of the reactor.
Credit: Photograph by Shaoan Cheng, Penn State University |
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