So, four African girls in Nigeria have created a generator that creates energy that lasts for 6 hours with one liter of urine! I know you're first thought is probably "gross!" But it's pretty cool.
How does it 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."
I wrote a hub on uses of urine, and part of it talks about using Pee Power to make hydrogen cells. These girls are on track. It's great that we are not only considering biomass for energy, but bio waste for more than compost.
What most people don't know is that urine isn't icky like feces is. It doesn't contain harmful bacteria unless you have some very specific diseases. It goes bad after a while because it's such a great fertilizer that when bacteria drifting in the air reach it, they go nuts and multiply like crazy.