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four teenagers (The oldest of whom is only fifteen) have developed a very amazing way to generate electricity in their remote village in Africa.
The process is extraordinarily simple – Take waste urine (pee) , feed the urine into a electrolytic cell , crack the urine into its base elements – Nitrogen, water & hydrogen. Filter the hydrogen through a normal water purifier, filter the hydrogen then through liquid borax, then feed the now pure hydrogen into a run of the mill generator.
The paper is about electrolytically spitting water vs splitting urine. Electrolysis, even optimized with a dash of sulfuric acid, will always provide poor energy returns in hydrogen production. Natural gas remains king, or if you want to dream, the nuclear-thermal sulfur-iodine cycle has some future.
Electrolysis, even optimized with a dash of sulfuric acid, will always provide poor energy returns in hydrogen production. Natural gas remains king, or if you want to dream, the nuclear-thermal sulfur-iodine cycle has some future.
an electrolytic cell potential of only 0.37 V is
thermodynamically required to electrolyze urea at standard
conditions. This is significantly less than the 1.23 V required
to electrolyze water theoretically generating 70% cheaper
hydrogen.
It's not tough to get hydrogen from already reduced species, so I was wrong in thinking the water provided the hydrogen. Maybe for a backyard project it'd be cool. Use a sheet of nickel and a carbon rod as electrodes. Since the KOH isn't consumed, but diluted after the tinkle is used up, plan on evaporation rates to match how often you go.
For home hydrogen production, maybe purchase fertilizer which is pretty much the product of slamming hydrogen against nitrogen on an industrial scale. Then from the safety of a bag of solid granules, re-extract the precious H2 as needed.
But urine collected on an industrial scale has better uses than generating about 10 of liters H2 from a single standing (or sitting, I don't indiscriminate). The paper's application notes hope in portable self-powered dialysis machines, pretty cool.
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