Diesel made from carbon dioxide and water

Audi Fuel

Audi Fuel

German car manufacturer Audi has reportedly invented a carbon-neutral diesel fuel, made solely from water, carbon dioxide and renewable energy sources. And the crystal clear ‘e-diesel’ is already being used to power the Audi A8 owned by the country’s Federal Minister of Education and Research, Johanna Wanka.

The creation of the fuel is a huge step forward for sustainable transport, but the fact that it’s being backed by an automotive giant is even more exciting. Audi has now set up a pilot plant in Dresden, Germany, operated by clean tech company Sunfire, which will pump out 160 litres of the synthetic diesel every day in the coming months.

 Their base product, which they’re calling ‘blue crude’ is created using a three-step process. The first step involves harvesting renewable energy from sources such as wind, solar and hydropower. They then use this energy to split water into oxygen and pure hydrogen, using a process known as reversible electrolysis.

This hydrogen is then mixed with carbon monoxide (CO), which is created from carbon dioxide (CO2) that’s been harvested from the atmosphere. The two react at high temperatures and under pressure, resulting in the production of the long-chain hydrocarbon compounds that make up the blue crude.

Once it’s been refined, the resulting e-diesel can be mixed in with our current diesel fuel, or used on its own to power cars in a more sustainable way.


Source:  sciencealert.com

Gasoline made from thin air

Engineers create gasoline from thin air:

 British engineers create gasoline from thin air

British engineers create gasoline from thin air

Experts hailed the breakthrough as a potential “game-changer” as scientists seek to solve the world’s energy crisis. The small company from the north England has developed “air capture” technology which creates synthetic petrol with only air and electricity. Company chiefs say they have produced five litres of petrol in less than three months at a small refinery in Stockton-on-Tees, Teesside by removing carbon dioxide from the atmosphere. They now hope to build a large plant generating more than a tonne of petrol per day within two years – and a REFINERY size operation within the next 15 years. The fuel works in any petrol tank and promises to be “completely carbon neutral” so long as renewable energy is used to provide the electricity. The technology, pioneered by company Air Fuel Synthesis, was presented to a London engineering conference this week. It mixes sodium hydroxide with carbon dioxide before zapping the resulting sodium carbonate with electricity, to form pure carbon dioxide. At the same time, hydrogen is produced by electrolysing water vapour captured with a dehumidifier.


Scientists hope it could help solve the energy crisis

Breakthrough … scientists hope it could help solve the energy crisis

The carbon dioxide and hydrogen are then used to produce methanol which in turn is passed through a gasoline fuel reactor, creating petrol. The £1.1m project has been in development for the past two years and is being funded by a group of anonymous philanthropists. They unnamed sponsors hope it could prove to be a lucrative way of creating renewable energy. Stephen Tetlow, the Institution of Mechanical Engineers chief executive, hailed the breakthrough as “truly groundbreaking”. “It has the potential to become a great British success story, which opens up a crucial opportunity to reduce carbon emissions,” he said. “It also has the potential to reduce our exposure to an increasingly volatile global energy market.”