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Renewable Diesel vs Biodiesel: What’s the Difference?

In the global effort to shift towards more sustainable energy sources that decrease the impact on our environment, a few greener fuel alternatives have come into play. In this article, we will take a look at biodiesel and renewable diesel.

Biodiesel vs. Renewable Diesel

Biodiesel (FAME) and renewable diesel (HVO or green diesel) are renewable, biodegradable, and domestically produced alternative diesel fuels. Both are derived from vegetable oils, greases, and recycled animal feeds and waste that would have otherwise been disposed of. Although they are both greener options to be used in place of petroleum diesel fuel, they differ in several important characteristics.

Production
  • Biodiesel: Made through a process called transesterification, where oils or fats are purified to produce fatty acid methyl esters (FAME), which is biodiesel. The biodiesel is then blended with petroleum diesel, which is necessarily to avoid damaging any plastic or rubber parts. B100 is pure biodiesel in its unblended form. B5 would be blended with at least 95% petroleum diesel.
  • Renewable Diesel: Produced through a process called hydrotreating, which uses hydrogen to treat feedstocks such as vegetable oils, animal fats, or waste oils. This process converts the oils into hydrocarbons which are chemically similar to petroleum diesel, allowing HVO to be used as a direct replacement or combined with any amount of petroleum diesel.
Cost
  • Biodiesel: Typically cheaper than renewable diesel, but price varies on the blend. Since it’s commonly blended with petroleum diesel, the price can fluctuate based on the price of diesel.
  • Renewable diesel: Typically more expensive than biodiesel because of its production costs, as well as its demand due to high-quality performance standards and drop-in capability.
Performance
  • Biodiesel: During the production process, oxygen is introduced into the fuel. The oxygen causes cold weather performance issues, which is something that should be taken into consideration when burning or storing the fuel. It is typically blended with petroleum diesel (B20 = 20% biodiesel, 80% petroleum diesel) to avoid engine compatibility issues.
  • Renewable diesel: Can be used as a direct replacement in any diesel engine without blending, and has no limitations on cold weather temperatures. Renewable diesel can also be used in pipelines, unlike biodiesel.
Regulatory and Industry Standards
  • Biodiesel: Must meet a different standard (ASTM D6751) and is typically blended with petroleum diesel so that it is safe to be used in diesel engines.
  • Renewable Diesel: Meets the same specifications as petroleum diesel (ASTM D975) allowing it to be used in existing infrastructure and diesel engines.
Environmental Impact
  • Biodiesel: While still a greener alternative to petroleum diesel, especially in terms of biodegradability and reduced air pollutants, FAME diesel releases nitrogen oxcide (NOx) emissions, which is a key contributor to smog and air pollution.
  • Renewable Diesel: Tends to have a lower overall environmental impact, primarily due to its greater reductions in greenhouse gas emissions, lower carbon footprint, and better energy efficiency.

Which Is Best for Your Business?
The one you choose depends on the vehicle you drive, weather conditions, and what your ultimate goals are. As discussed above, the cost of biodiesel is cheaper. Therefore if you don’t live in a state that gets freezing temperatures and cost is a factor, biodiesel might be the better option. But ultimately, renewable diesel is a higher end product that has better performance, can be used in existing infrastructure, and produces fewer harmful emissions. 

If you are a business in need of a biodiesel or renewable diesel, or just want a little more information about it, get in contact with us! One of our industry experts will help guide you through all of our product and service offerings.

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Having a fuel tank on-site will bring you peace of mind knowing that you always have fuel when you need it. If you are a business in need of a fuel tank or just wanting a little more information about it, get in contact with us! One of our industry experts will help guide you through all of our product and service offerings.

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