Sylvie Willis
Biodiesel is a type of diesel fuel that is derived from vegetable oil or animal fat oil, as opposed to the more commonly used petroleum. Biodiesel-fueled cars are becoming increasingly popular due to their environmental benefits and efficiency. However, finding biodiesel fueling stations can be a challenge for those interested in switching to this alternative fuel option. While biodiesel blends are available at hundreds of stations, those looking to fill up their vehicles with pure biodiesel may have limited options. Some resources, such as the Alternative Fueling Station Locator, can help users find public and private biodiesel fueling stations in their area. Additionally, some car models can be modified to run on vegetable oil, providing another option for those interested in using biodiesel.
Where to fill up biodiesel-fueled cars
| Characteristics | Values |
|---|---|
| Biodiesel fueling stations in the United States | Available across the country |
| Biodiesel blends | Available at hundreds of stations |
| Stations selling blends above B5 | Need to meet additional requirements |
| B5 blends | Exempt from requirements as treated the same as petroleum diesel |
| B20 blends | Sold at most gas stations |
| B5 blends | Approved by all original equipment manufacturers (OEMs) |
| Higher blends | Check OEM engine warranty for approval |
| Biodiesel fueling stations | Can be found using the Alternative Fueling Station Locator |
| Biodiesel Handling and Use Guide | Provides information on installing biodiesel equipment |
| Biodiesel sources | Vegetable oil, waste vegetable oil, animal fat oil, hemp seed oil |
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What You'll Learn
Biodiesel fueling stations in the US
Biodiesel is a domestically produced, renewable fuel that can be used instead of petroleum-based diesel. It is a safer and more environmentally friendly option than regular diesel. Biodiesel has a higher flashpoint than regular diesel, and it is non-toxic, which means it will cause less environmental damage if spilled. It also reduces tailpipe emissions, including unburnt hydrocarbons, carbon monoxide, and particulate matter.
Biodiesel blends are available at hundreds of stations across the United States. The most common blend is B20, which is composed of 20% biodiesel and 80% petroleum diesel. This blend avoids the cold-weather performance issues seen with B100 (pure biodiesel) and qualifies for biodiesel fuel credits under the Energy Policy Act of 1992. B20 and lower blends do not generally require engine modifications and can be used in diesel cars, trucks, tractors, boats, and electrical generators.
The Alternative Fuels Data Center's Station Locator allows users to search for public and private biodiesel (B20 and above) fueling stations. This tool can be used to find stations by location or along a route, and it includes information on private and planned stations. The Station Locator can be accessed through the Alternative Fuels Data Center website, and users can also submit suggestions for new stations to be included.
In addition to the Station Locator, some websites and organizations provide information on biodiesel fueling stations in specific states or regions. For example, the Virginia Clean Cities organization provides resources for finding biodiesel refueling stations in Virginia, including a list of public biodiesel stations in the state. However, it is recommended to call the stations to verify their location, hours of operation, and access, as this information may change over time.
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Biodiesel blends and lubricity
Biodiesel is a renewable, biodegradable alternative fuel made from a mix of modified vegetable oils and diesel fuel. It is a popular fuel option for biodiesel-compatible vehicles and can also be used in regular diesel cars and trucks, often without the owner's knowledge.
Biodiesel is rarely used in its pure form and is typically blended with diesel. In the US, almost all "regular" diesel sold at gas stations contains blends of up to B5. Biodiesel blends are designated by the amount of diesel they are mixed with, for example, B100 is pure biodiesel, while B20 is a blend of 20% biodiesel and 80% diesel.
One of the primary advantages of biodiesel is its positive impact on lubricity, even at very low blend levels. Lubricity refers to the lubricating properties of the fuel, which help prevent premature wear and tear on fuel system components. Biodiesel blends can improve the lubricity of diesel fuel, which has been reduced by federal regulations that lowered the allowable fuel sulfur content. The higher lubricity of biodiesel may increase the usable life of high-pressure fuel injection equipment.
The lubricity of biodiesel is influenced by its chemical composition, particularly the presence of monoalkyl esters, monoglycerides, diglycerides, triglycerides, and free fatty acids. Unrefined biodiesel has been found to have higher lubricity properties compared to refined biodiesel due to the presence of these compounds. The type of vegetable oil used and the fatty acid profile can also affect the lubricity of biodiesel.
It is important to note that while biodiesel's high lubricity is generally advantageous, it can also cause issues during the transition from existing systems to biodiesel. The higher lubricity can release deposits on tank walls and pipes, leading to fuel filter clogs. Therefore, it is recommended to check the engine manufacturer's recommendations and warranty to ensure that higher-level blends of biodiesel are approved for your vehicle.
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Biodiesel from vegetable oil
Biodiesel is a substitute for diesel fuel that can be produced from vegetable oils such as palm oil, sunflower oil, soybean oil, rapeseed oil, and castor oil. It can also be produced from waste cooking oil, such as the oil used for frying in restaurants. Using biodiesel as a fuel can help to reduce the environmental, social, and economic problems caused by the improper disposal of waste cooking oil.
To make biodiesel from vegetable oil, you will need the following ingredients:
- Vegetable oil (1 litre of new oil, such as canola oil, corn oil, or soybean oil)
- Methanol (3.5 grams, also known as Heet)
- Sodium hydroxide (3.5 grams, also known as lye)
It is important to note that both methanol and sodium hydroxide are toxic, so it is crucial to take proper safety precautions when handling these chemicals. All containers and equipment used for making biodiesel should be clearly labelled and kept separate from any food items or utensils.
- Mix the methanol and sodium hydroxide in a glass blender pitcher on the lowest setting until the sodium hydroxide has completely dissolved (about 2 minutes).
- Slowly add 1 litre of vegetable oil to the mixture.
- Continue blending the mixture on low speed for 20 to 30 minutes.
- Pour the mixture into a wide-mouthed jar and allow the liquid to separate into layers.
The process of converting vegetable oil into biodiesel is known as transesterification, which involves reacting the oil with other common chemicals to produce biodiesel and glycerin. Biodiesel can be used in any diesel automotive engine in its pure form or blended with petroleum-based diesel, offering a less expensive, renewable, and clean-burning fuel option.
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Biodiesel from animal fat oil
Biodiesel is a feasible substitute for fossil diesel, and it can be produced using different raw materials. One such raw material is animal fat oil. Animal fat oil is an attractive feedstock for biodiesel because its cost is substantially lower than vegetable oil. This is because the market for animal fat is much more limited than the vegetable oil market, as much of the animal fat produced in countries like the US is not considered edible by humans.
Animal fat is commonly sourced from beef tallow, pork lard, and chicken fat. To extract the oil, animal carcasses are ground to a fine consistency and cooked until the liquid fat separates. The solids are then passed through a screw press to complete the removal of fat from the solid residue. The cooking process also removes water, preventing the fat and solid material from becoming rancid.
Animal fat feedstocks result in biodiesel with a high cetane number, an important quality parameter for diesel fuels. This high cetane number helps the engine start more quickly and run more quietly. Biodiesel made from animal fat also has a high cloud point, which is the temperature at which the fuel starts to solidify. For example, biodiesel made from beef tallow and pork lard has a cloud point range of 55°F to 60°F, so it should only be used in very warm climates.
Animal fat biodiesel has several advantages over vegetable oil biodiesel. It has a lower risk of becoming rancid due to its low levels of polyunsaturated fatty acids, and it produces lower nitrogen oxide (NOx) emission levels than biodiesel made from soy oil.
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Installing biodiesel equipment
Biodiesel fueling stations are available across the United States, and some state laws even require petroleum diesel to contain a small percentage of biodiesel. If you're thinking of installing biodiesel equipment, there are a few things you should know.
First, you'll need to determine what fueling equipment is necessary to deliver biodiesel fuel to vehicles. This includes tanks, pipes, submersible turbine pumps, dispensers, and hanging hardware. You'll also need equipment to receive fuel and prevent, detect, and contain fuel and vapour releases, such as sumps and accessories, manholes, flexible composite connectors, fill caps and adaptors, entry fittings, overfill prevention, leak detection, sensors, drop tubes, and vents.
Next, you'll need to determine which permits and regulations you need to comply with. For example, a city or county permit is necessary for fleet and retail fuelling site projects, and projects using above-ground tanks may involve additional local fire marshal and state requirements. Some municipalities no longer allow above-ground fuel storage tanks, so you'll need to check with your local authorities. The contractor will need to register storage tanks with the state environmental agency, which must be notified 30 days in advance of storing a biodiesel blend above B20 fuel.
It's important to ensure that your equipment is compatible with biodiesel. The U.S. Environmental Protection Agency (EPA) considers existing tanks, pipes, and associated underground equipment to be compatible with the biodiesel blend B20 (6% to 20% biodiesel, blended with petroleum diesel). Above-ground equipment must be UL listed for the fuel dispensed, and below-ground equipment must comply with federal code and either be UL listed for the fuel dispensed or have a letter from the manufacturer stating compatibility with blends above B20. Many manufacturers have issued letters stating compatibility with B100, and most existing tanks are compatible with biodiesel blends up to B100.
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Frequently asked questions
Biodiesel fueling stations are available across the United States. You can use the Alternative Fueling Station Locator to find public and private biodiesel (B20 and above) fueling stations by location or along a route.
Biodiesel is a type of diesel fuel that is made from vegetable oil or animal fat oil, rather than petroleum.
Biodiesel can improve the lubricity of fuel, even at low blend levels. It is also a more efficient and less polluting fuel option.
No, it is important to check the OEM engine warranty to ensure that higher-level blends of biodiesel are approved for use in your vehicle.
It is possible to produce biodiesel at home, but it requires the necessary equipment and knowledge. Some people choose to modify their diesel engines to run on vegetable oil. However, it is important to consult a professional before making any modifications to your vehicle.
