FollowAn electrical engineering student from Instituto Federal de Goiás, a university in Brazil’s heartland, invented a solar power system to treat water that does not require electricity, does not emit CO2 and absorbs material that can damage the environment. The low-cost device can be used by low income communities who do not have access to basic sanitation.
20 year-old Leonardo Lira used five plywood planks covered in foil to make a lid-less box of one square meter with open and angled walls. The device is a kind of concentrator that receives sunlight.
