Eco-briquettes provide cheap fuel from waste

Students at University of Johannesburg, South Africa, have developed a viable formula for the production of briquettes from waste material. The briquettes have fewer harmful emissions than coal and paraffin, but deliver similar energy for cooking purposes.
The briquette is in the shape of a round disc and made of slightly decomposed and compressed plant matter. The disc has a hole in the centre which allows the flame to breath and burn.
"The ultimate goal of the project was to produce briquettes that are environmentally-friendly, provide an energy-efficient solution, and convert waste into a renewable, relatively cheap source for production," a university spokesperson said.
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