(Notícia em Inglês)
NASA may concern itself largely with space exploration, but it also wants to keep Earth on a steady course in the face of rising energy costs and climate change. Now the U.S. space agency has thrown its weight behind a clever method of growing algae in wastewater for the purpose of making biofuel.
The OMEGA system consist of algae grown in flexible plastic bags floating offshore, where cities typically dump their wastewater. Oil producing freshwater algae would naturally clean the wastewater by feeding on nutrients in the sewage. The cleansed freshwater could then release into the ocean through forward-osmosis membranes in the side of the plastic bags. The algae would be turned into fuel in a manner similar to using corn to make ethanol.
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