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Cars have been fuelled by a variety of resources over the years, from steam engines to electric power. Alcohol, specifically whisky, has also been used as an alternative fuel source for cars. In 2017, a car was successfully powered by a biofuel called biobutanol, made from the waste products of whisky fermentation. This fuel can be used in any car that runs on gas or diesel, and offers a greener alternative to regular gasoline, reducing carbon emissions by up to 95%. While it is possible to fuel a car with whisky, it must have a high alcohol content, with a minimum of 75% alcohol by volume required for combustion.
| Characteristics | Values |
|---|---|
| Can scotch be used to fuel a car? | Yes, but only if it has a high enough alcohol content. |
| Type of alcohol in scotch | Ethanol |
| Minimum alcohol content needed to fuel a car | 75% (150 proof) |
| Alcohol content of average whiskey | 40% |
| Alcohol content needed for optimal performance | 95% (190 proof) |
| Alternative fuel | Biobutanol, made from the barley kernels left over from the fermentation of scotch |
| Benefits of biobutanol | Reduces carbon emissions by 90-95%, reduces other particulates by 99% |
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What You'll Learn
Scotch whisky waste can be converted into biobutanol to fuel cars
It is true that Scotch whisky waste can be converted into biobutanol to fuel cars. In fact, there are already whisky-powered vehicles in Scotland. Glenfiddich, for instance, has been using biogas made on-site from the by-products of its whisky to power some of its trucks.
During the distilling process of Scotch whisky, waste products like draff, pot ale, and spent lees are generated. Draff is the sugar-rich kernels of barley that are soaked in water to facilitate the fermentation process. Pot ale is the yeasty liquid that is heated during distillation. Spent lees is a watery residue. For every liter of whisky produced, there is around 2.5 kg of draff, 8 liters of pot ale, and 10 liters of spent lees.
Previously, these waste products were separated and set aside for use in cattle feed or spread on fields. However, in 2017, a car took its first journey fueled by whisky waste biobutanol. The bacterial fermentation process known as Acetone-butanol-ethanol (ABE) fermentation can be used to break down the sugars in the whisky draff and pot ale into acids, which can be further converted into solvents such as butanol and ethanol. These solvents can be added to petrol or diesel to power a car.
Using whisky byproducts to make biofuel has several advantages. It helps to reduce waste and is estimated to cut greenhouse gas emissions by 85% compared to gasoline. It also reduces carbon emissions by 90% and other particulates by 99%, making it a viable option for green vehicles.
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Scotch must be at least 75% alcohol to be used as car fuel
It is true that Scotch can be used to fuel a car, but only if it has a high enough alcohol content. The alcohol in whiskey, ethanol, is the same type used as fuel. While the average whiskey is only 40% alcohol, to power a car, it would need to be at least 75% alcohol by volume (or 150 proof), with 95% alcohol being even better for optimum results.
Whiskey with this high alcohol content is known as moonshine, and it was used to fuel cars during the Prohibition, when it could be as strong as 190 proof. Today, some people even install legal "moonshine" stills in their backyards to produce this high-potency hooch to save on gas money. However, it is important to note that cars manufactured before 2000 are not equipped to handle alcohol long-term, and fueling with ethanol can cause leaks, rust, and corrosion.
An alternative to using whiskey as a fuel is to use the waste products from the distillation process. In 2017, a car was driven for the first time using biobutanol, a biofuel made from the barley kernels (called draff) that are left over from the fermentation process of Scotch whisky. This fuel has been shown to reduce carbon emissions by up to 95% and is a direct replacement for petrol, with no noticeable difference in performance.
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Whisky waste reduces carbon emissions by 90%-95%
Whisky waste can be used to fuel cars, and it reduces carbon emissions by 90-95%. The Scottish whisky industry has 151 whisky distilleries, exporting 5.6 billion pounds worth of whisky per year, and accounting for 77% of the food and drink industrial sector in Scotland and 22% in the UK. Whisky is a very energy-intensive manufacturing process, and each distillery is a major source of greenhouse gas emissions.
The whisky distillation process produces a large amount of waste, including 2.5 kg of solid by-products and over 10 liters of liquid by-products for every liter of whisky produced. This waste has traditionally been sold as high-protein cattle feed or used as fertilizer. However, a more environmentally friendly use for this waste has been discovered.
Through anaerobic digestion, bacteria break down the spent grains left over from the malting process, producing biogas. This biogas can be used to fuel cars and has been shown to reduce carbon emissions by up to 95%. In 2017, a car took its first journey using this specially made whisky waste biobutanol, and the driver reported that it was as smooth as driving with regular petrol.
Whisky waste biofuel not only helps reduce carbon emissions but also has the potential to replace oil in plastics, cosmetics, pharmaceuticals, clothing, and electronics. This discovery could have a significant impact on the environment, and the Scottish whisky industry aims to be carbon net-zero by 2040.
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Whisky biofuel runs in any car that uses gas or diesel
It is true that whisky biofuel can run in any car that uses gas or diesel. In 2017, the world's first car running on biofuel derived from whisky residue was successfully test-driven in Scotland. The fuel, known as biobutanol, is designed to be a direct replacement for petrol and diesel and does not require any engine modifications. It is made from barley kernels (draff) and pot ale, a yeasty liquid left over from the fermentation process.
Biobutanol is a type of alcohol that can be used as a substitute for fossil fuels. The whisky residue used to produce it is considered waste by whisky manufacturers. When Celtic Renewables, the company behind the development of biobutanol, conducted its first test run, BBC Scotland reporter Lisa Summers was impressed by how smoothly the car ran on the alternative biofuel, noting no difference from a standard gas or diesel-fuelled vehicle.
Celtic Renewables received a £9 million government grant to build a commercial plant near Falkirk to further develop whisky-based fuel for cars and trucks. The company also plans to expand to other whisky-producing countries, such as Japan, India, and the United States. This expansion could tap into the significant potential for whisky fuel, with the U.S., Canada, and Ireland also producing millions of cases of whisky annually.
While whisky biofuel presents an exciting alternative, it is worth noting that the average whisky is not strong enough to fuel a car. For whisky to be used as fuel, it needs to have an alcohol content upwards of 95%, while the average whisky only contains 40%. Therefore, the focus is on utilizing the waste products and byproducts of whisky production, which also helps reduce carbon emissions.
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Whisky biofuel has been used in delivery trucks in Scotland
Whisky biofuel has been used to power delivery trucks in Scotland. In 2017, a car took its maiden voyage using a specially made whisky waste biobutanol with a BBC reporter behind the wheel. The reporter was impressed by how smoothly the car drove and did not notice any difference between standard gas and the alternative biofuel.
The whisky waste used for biofuel is a byproduct of the whisky distillation process. Typically, this waste is separated and set aside for use in cattle feed. However, it was discovered that this waste product could be used to create biogas, which reduces carbon emissions by 90-95%. The biogas is then converted into fuel.
Celtic Renewables Ltd received a grant to construct a commercial plant near Falkirk to further develop the use of whisky-based fuel to power cars and trucks. They plan to expand to other whisky-producing countries such as Japan, India, and the United States.
Whisky giant Glenfiddich has already started converting its fleet of delivery trucks to run on low-emission biogas created from waste generated during the whisky-making process. The company has set up specialized fueling stations at its Speyside distillery in the Northeast Scottish Highlands as part of a closed-loop sustainability initiative. Glenfiddich plans to increase the number of delivery trucks within its company that run on its biofuel and expand the technology to other companies' trucks as well.
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Frequently asked questions
Yes, Scotch can be used to fuel a car. In 2017, a car was driven in Scotland using biobutanol, a biofuel made from the waste products of Scotch whisky.
The waste products of the Scotch whisky distillation process are separated and set aside. The waste products are then converted into biogas, which can be used to fuel cars.
Using Scotch whisky waste as fuel reduces carbon emissions by up to 95% and other particulates by 99%. This makes it a more environmentally friendly alternative to regular gasoline.
No, regular whisky does not have a high enough alcohol content to be used as fuel. Whisky would need to be upwards of 95% alcohol to be used as fuel, while most whisky is only 40% alcohol.
