[Christ]

Originally Posted by mort

I think the 6 hours is just idling the generator. But you should read the link in the article "cracks the urea" You'll need to redo your math.

There they say that the energy to electrolyze urea is about 1/3 of that required for water. Of course a liter of urine only contains a few grams of urea.
-mort

Like I said, I was being REALLY LAX on the numbers in hopes that it could SOMEHOW work.

Urine is like 97 percent water by volume. Ergo, water would be the best candidate to remove the maximum volume of hydrogen per unit energy invested from that particular medium.

Actually leaving the urea in the water lessens the electrolytic load necessary to separate the hydrogen from the oxygen, but it's still completely unrealistic.