Human urine is chiefly composed of water, with organic solutes including urea, creatinine, uric acid, and trace amounts of enzymes, carbohydrates, hormones, fatty acids, pigments, and mucins. The percentage of representative compounds are water 95%, urea 9.3 g/l, chloride 1.87 g/l, sodium 1.17 g/l, potassium 0.750 g/l, creatinine 0.670 g/l.
This is how it works; Urine is placed into an electrolytic cell where process of electrolysis cracks the urea into nitrogen, water and hydrogen. As we all know Hydrogen is highly inflammable gas and if somehow we are able to extract it from the solution we can get abundant supply of energy free of cost. The hydrogen and water solution is passed through a water filter for purification which then pushes the hydrogen extracted into the gas cylinder. The gas cylinder then pushes the hydrogen into a cylinder of liquid borax, which is used to remove the moisture from hydrogen gas. This purified hydrogen is pushed into generator which runs on it and converts mechanical energy into electrical energy.
1 Liter of urine gives you 6 hours of electricity. According to MedlinePlus, the normal urine output for a healthy adult is 2 liters per day and if we estimate the total amount of urine produced every day in world it would be like huge amount of free energy. So let’s do some mathematics here, according to the latest official current world population estimate (mid-year 2011) the population of world is likely to be 7,021,836,029 (that is more than 7 billion). If we multiply 7 billion with 2 liters of urine per day which means 14 billion liters of urine and in fact 84 billion hours of electricity. If you are still not impressed, then let me do a bit of more mathematics, 84 billion hours of electricity is approximately worth $242 billion and if you had 1 billion dollars and spent $1,000 a day, it would take you 2,749 years to spend it all.