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Andrew Zimmerman Jones

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By Andrew Zimmerman Jones, About.com Guide to Physics

Electricity from Microbes

Friday May 12, 2006
The idea of turning waste (or biomass) into electrical power is one which has a lot of research behind it. For years, it's been known that microbes can generate electricity by consuming sources, such as underwater sediments and mud. NASA has believed that such microbes could be used to recycle waste on long space flights.

Findings from a team at Belgium's Ghent University created fuel cells containing such microbes. Over a 200 day trial, they supplied the cells with waste materials, including hospital and potato processing factory wastes. By the end of the study, the short-term power densities (power produced per unit mass) tripled, and they found that connecting the cells in parallel created consistently stronger currents.

One of the most intriguing aspects, however, is that the cells, which initially consisted of a diverse mix of microbes, went through a form of communal evolution, with the Brevibacillus agri microbe becoming the majority when performance reached its maximum.

The detailed findings are reported in a paper in the May 15 issue of the Environmental Sciencce & Technology journal.

Comments

March 18, 2008 at 6:28 am
(1) Ganesh says:

Respected Sir,I am really intrested in your idea of electricity from microbes which has a potential to recycle the different wastes. But sir can you please give information about basics of the mechanism of production of electricity from microbes and different kinds of waste materials that we can recycled?

March 10, 2009 at 7:06 am
(2) shankarlal says:

sir, i am interested to work in this topic we can produce electicity from the microbes i know that sir, but how can we produce electricity in large scale production.

March 10, 2009 at 6:32 pm
(3) physics says:

Unfortunately, I haven’t heard much more on this particular topic since the original article. I would recommend looking up the original article, getting the names of the authors, then contacting those individuals at Ghent University who worked on the project to see what the status is.

September 3, 2009 at 9:16 am
(4) anusha says:

sir, i want to know about full project of yours so that we can try our own experiments that can stop our world energy crisis and stopping of nuclear powers

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