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Urine-powered generator unveiled at international exhibition
http://news.yahoo.com/ ^

Posted on 11/12/2012 6:56:29 PM PST by jakerobins

Four African girls have created a generator that produces electricity for six hours using a single liter of urine as fuel.

The generator was unveiled at last week's Maker Faire in Lagos, Nigeria, by the four teens Duro-Aina Adebola, Akindele Abiola, and Faleke Oluwatoyin, all age 14, and Bello Eniola, 15.

So how exactly does the urine-powered generator work? •Urine is put into an electrolytic cell, which separates out the hydrogen. •The hydrogen goes into a water filter for purification, which then gets pushed into the gas cylinder. •The gas cylinder pushes hydrogen into a cylinder of liquid borax, which is used to remove the moisture from the hydrogen gas. •This purified hydrogen gas is pushed into the generator.

And as for delivering the fuel itself? Well, we'll leave that up to the consumer

(Excerpt) Read more at news.yahoo.com ...


TOPICS: Miscellaneous; News/Current Events
KEYWORDS: sourcetitlenoturl
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To: jakerobins

Once this becomes standard...here come the rap stars...

my stream aint no c stream, aint no b stream its a a stream, fully charged, I got power by the hour...etc


51 posted on 11/12/2012 8:10:38 PM PST by ResponseAbility (The truth of liberalism is the stupid can feel smart, the lazy entitled, and the immoral unashamed)
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To: jakerobins

Maybe this will give Alanis Morissette a career resurgence...Isn’t it ionic...don’t you think.


52 posted on 11/12/2012 8:18:57 PM PST by ResponseAbility (The truth of liberalism is the stupid can feel smart, the lazy entitled, and the immoral unashamed)
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To: Da Coyote
And what powers the electrolytic cell for step one?


It's got Electrolytes...

53 posted on 11/12/2012 8:33:06 PM PST by libertarian27 (Check my profile page for the FReeper Online Cookbook 2011)
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To: jakerobins

If you dont know make magazine it is a MUST. Maker Faire in the bay area every year is A MUST.


54 posted on 11/12/2012 8:35:49 PM PST by Walkingfeather
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To: jakerobins

Urine, urout. Simple process really.


55 posted on 11/12/2012 9:16:12 PM PST by reagan_fanatic (You are not now, and will never be my President, Mr. Obama.)
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To: Da Coyote

Bet they could get a solar-powered battery to do it. Actually not a bad idea, even tho I won’t retrofit my bathrooms for it.


56 posted on 11/13/2012 12:44:32 AM PST by Secret Agent Man (I can neither confirm or deny that; even if I could, I couldn't - it's classified.)
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To: jakerobins
6 hours running time from the hydrogen in the urea (Yahoo's article elided the urea clause in step 1 of the explanation in the original article it links to.) in 1 liter of urine?

20-35 g of urea, CH4N2O, is excreted daily in human urine in a volume of about 1 - 1.5 litres.

That's 1/3 of a mole/liter, so about 1-1/3 moles of H runs for 6 hours, so 1/9 mole of hydrogen/hour running time.

This gives ~32,000 joules used per hour running time, which comes to a whopping 8.9 watts/hour, or a total of ~53 watt-hours/liter of urine...assuming 100% efficiency throughout the system, including 100% recovery of the hydrogen in the urea in the urine.

Questions: What is the "electrolytic cell"; can it be be made cheaply, with local materials; how long does one last; can it be scaled to a useful level, or is it on par with a 'lemon battery'?

Oh, and a final questions: Did the generator run for 6 hours; or did the system require 6 hours to produce the hydrogen from the liter of urine; and, did they actually run the generator at all, or was it a 'conceptual' exhibit?

I would love to see a real report on this, rather than a journalist's story about it.

57 posted on 11/13/2012 1:18:01 AM PST by ApplegateRanch (Love me, love my guns!©)
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To: jakerobins
Okay; first read through, before posting, I missed the link to the http://www.suttonfruit.com/pics/urea_electrolysis.pdf paper on the conversion itself.

After 22 electrolysis hours, 13% of the urea was converted into hydrogen, nitrogen, and potassium carbonate, as determined using a heat treatment method for urea determination. We have demonstrated that urea at the concentrations found in urine can be used for the production of H2 through this new technology utilizing inexpensive Ni. The electrolysis of urine was also demonstrated via cyclic voltammetry (see ESIw, Fig. S4). Theoretically, hydrogen can be produced at $0.69 kg 1 based on an electricity cost of $0.07 kWh 1 and the proposed electrochemical reactions (eqn (1–4)) that have been developed from electrochemical data and gas analyses. Table 1 shows energy consumption (Wh per gram of hydrogen) and cost of hydrogen comparison between urea and water electrolysis at experimental conditions with Ni anodes.

Need a LOT more information on the girls' "6 hours on a liter of urine"; sounds like Gyro Gearloose's car that got "50 miles to the pint of peanut oil" in a 1950s Donald Duck comic book.

58 posted on 11/13/2012 1:48:56 AM PST by ApplegateRanch (Love me, love my guns!©)
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To: jakerobins

What part does the urine play in all this? It sounds like regular water could be used to achieve the same result.


59 posted on 11/13/2012 2:00:52 AM PST by Paisan
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To: Revolting cat!; Gasshog; rlmorel

Remembered this incident but forgot the guy’s name. All this guy needed was the water wheel.

“Gary Miller, host of ESPN’s Baseball Tonight, is arrested in Cleveland for urinating out the second-story window of a bar, onto two off-duty police officers.”


60 posted on 11/13/2012 2:23:27 AM PST by Right Wing Assault (Dick Obama is more inexperienced now than he was before he was elected.)
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To: Paisan
It sounds like regular water could be used to achieve the same result.

Only if you want to spend more energy than you produce.

61 posted on 11/13/2012 3:25:18 AM PST by thackney (life is fragile, handle with prayer)
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To: jakerobins

Oh great! Another “Green” (or maybe yellow in this case) technology for Odumbo to sink a trillion dollars or so of taxpayer money, that we don’t have, into.


62 posted on 11/13/2012 3:37:27 AM PST by Have Ruck - Will Travel (Hmm, I wonder what would happen if I...)
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To: Have Ruck - Will Travel

It’s only “Green” energy on St. Pattys Day! LOL.... Maybe then it would replace Earth Day and we could tax credits for Home Brewing Beer??


63 posted on 11/13/2012 7:00:18 AM PST by jakerobins
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To: jakerobins

(Recovering from laughing my *** off)

Okay, you have a point about St. Patty’s Day. I hadn’t taken the thought out that far. Although I’m not sure the poor grid could handle the overload on that day, I’d be more than willing to make my donation. Several times even.


64 posted on 11/13/2012 6:37:07 PM PST by Have Ruck - Will Travel (Hmm, I wonder what would happen if I...)
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