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Wednesday, May 13, 2015

Audi Synthesizes Diesel From Carbon Dioxide and Water


Maybe EVs aren't inevitable after all. Audi, together with the German energy company Sunfire, has announced that it is able to synthesize diesel from water and CO2, and that the product can fuel automobiles.
The process involves heating water to 800 degrees Celsius, creating steam. Electricity—from a green-energy power source, naturally, biomass in this case—heats the water, and the resulting high-temperature electrolysis breaks it down into hydrogen and oxygen. The oxygen is released, and the hydrogen is combined with CO2 taken from the atmosphere. Under high heat and pressure, the two synthesize to create a liquid known as blue crude. The blue crude is refined into what Audi calls e-diesel.