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News Link • Energy

Let's grow algae in sewage then use it to power things

• dvice
Our sunglasses can capture sunlight to charge our iPhones. There’s a building out there powered by algae. And now, growing algae on sewage could generate affordable biofuels.
To make this work, you begin with a raceway. This isn't a track for Formula One cars; instead, it’s a series of small artificial rivers where waste water flows and algae is cultured. In those ponds is a paddle wheel, which pushes the water about and mixes algae into the waste water. The shallowness of the rivers encourages sunlight and helps the algae grow. And that algae is pretty important, because it's what gets turned into biofuel.

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