Audi last November presented their new plant that produces e-diesel and recently the factory produced the first liters of the innovative fuel, with the Minister of Education and Research of Germany, Prof. Dr. Johanna Wanka, pouring the first 5 liters produced in the gas tank of an Audi A8 3.0 TDI.
In a statement, the minister said:
This synthetic fuel produced from CO2, is a huge success for the sustainability research. If we make extensive use of CO2 as a raw material, it will decisively contribute to climate protection and efficient use of resources and it will set out the basic principles of “green economy”.
The e-diesel production process is quite complicated, with Audi saying that they take carbon dioxide from water, while in an another part of the plant, an electrolysis unit separates the water into hydrogen and oxygen. The hydrogen reacts with carbon dioxide in a process conducted at 220 °C and a pressure of about 25 bar to create a fluid consisting of hydrocarbon compounds called “Blue Crude”.
The plant can produce up to 160 liters of Blue Crude per day and nearly 80% of it can be converted into synthetic diesel, known as e-diesel.