NEWS – National Geographic

Posted: Thursday, April 30, 2015

Making e-diesel requires several steps, which are powered by renewable energy sources such as wind and solar. High-temperature electrolysis splits water, heated to form steam, into hydrogen and oxygen. The oxygen is released into the atmosphere while the hydrogen is fed into a reactor, where it reacts with CO2 to form a liquid long-form hydrocarbon known as “blue crude.” Audi says the  efficiency of the overall process is “very high”—about 70 percent.

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