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[Engadget] Urine-powered generator produces six hours of electricity per bathroom break - Page 2

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post #11 of 55

11/8/12 at 11:45pm

atomicmew

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Quote:

Originally Posted by Poppinj

Not true. Apparently there is a benifit to using pee instead of water. From the article,
Here’s an article from 2009 when researchers proposed this in the US
http://www.rsc.org/chemistryworld/news/2009/july/02070902.asp
The important numbers : A … “nickel-based electrode to selectively and efficiently oxidise the urea. To break the molecule down, a voltage of 0.37V needs to be applied across the cell – much less than the 1.23V needed to split water. ”

And the molar concentration of urea in urine is?

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post #12 of 55

11/9/12 at 3:02am

Liranan
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If this technology works it will be bought by some giant corporation, patented and you won't see it again, like a lot of inventions that would be a detriment to one of the many cartels.

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post #13 of 55

11/9/12 at 3:05am

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Quote:

Originally Posted by Liranan

If this technology works it will be bought by some giant corporation, patented and you won't see it again, like a lot of inventions that would be a detriment to one of the many cartels.

like that dude with the Hydrogen engine that was insanely better than the ones we have now. He's disappeared!

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post #14 of 55

11/9/12 at 4:58am

Daegameth
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Quote:

Originally Posted by trcvrs

And the molar concentration of urea in urine is?

Would be much more concentrated in countries where convinent acces to clean water is severely limited. Just where this sort of engine would see deployment.

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post #15 of 55

11/9/12 at 5:24am

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This isn't invented. It's just no one was stupid enough to do it in the past. Electrolysis uses more energy than it produces directly. That's why you will never see more than a few hydrogen cars in existence.

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post #16 of 55

11/9/12 at 6:46am

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[io9.com] Oh, this? Just some teenage girls from Africa who invented a urine-powered generator.

That's right, a generator powered by urine. I hope there are people at DARPA right now being fired for not thinking of this.

Quote:

Urine is put into an electrolytic cell, which cracks the urea into nitrogen, water, and hydrogen....1 Liter of urine gives you 6 hours of electricity.

Link

and an NBC article somewhat critical of the invention: Link
Edited by TehStone - 11/9/12 at 6:49am

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post #17 of 55

11/9/12 at 6:49am

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So what's the catch?

post #18 of 55

11/9/12 at 6:52am

TehStone
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The catch is they didn't tell you the total output in watts/amps. Can it power a smartphone for six hours or a house for six hours?

And I also discovered this is a repost but I did a better job

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post #19 of 55

11/9/12 at 6:54am

Noctizzle
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this is a repost. Also, someone analyzed the picture stating "How can it work"?

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post #20 of 55

11/9/12 at 6:57am

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If it can be made efficient...wow. Of all the places for Energy innovation. I'm so Proud of them. I'm glad they have the opportunity to learn and excel compared to other places in the world. Kudos to them. Really brilliant kids.

Ghoxt

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