
Here’s
some news from Africa that will be of interest to all of the people
waiting in line for gas to use in their generators after Hurricane
Sandy.
Four teenage girls figured out a way to use a liter of urine as fuel
to get six hours of electricity from their generator. Fourteen-year-olds
Duro-Aina Adebola, Akindele Abiola, and Faleke Oluwatoyin, and
15-year-old Bello Eniola displayed their invention this week at Maker
Faire Africa in Lagos, Nigeria, an annual event meant to showcase
ingenuity.
Here’s how the urine-powered generator works, as explained by the blog on the
makerfaireafrica.com website:
• Urine is put into an electrolytic cell, which separates out the hydrogen.
• The hydrogen goes into a water filter for purification, and then
into a gas cylinder, which looks similar to the kind used for outdoor
barbecue grills.
• The gas cylinder pushes the filtered hydrogen into another cylinder
that contains liquid borax, in order to remove moisture from the gas.
Borax is a natural mineral, commonly used in laundry detergent.
• The hydrogen is pushed into a power generator in the final step of the process.
A big drawback is that hydrogen poses an explosion risk. But the
girls used one-way valves throughout the device as a safety measure.