How Fats and Used Cooking Oils are Low Carbon Renewable Resources

DAR PRO Solutions transforms used cooking oil and animal meat by-products into valuable new resources that contribute to a more sustainable world. Almost all the used cooking oil we collect and roughly half of the animal fats are processed at our plants across the country and then sent to one of our three biofuel production facilities to become low carbon, clean-burning biodiesel or renewable diesel.

The remaining oils, fatty acids, proteins, meals, and minerals are used as nutritional ingredients for livestock feed and pet food, or for a variety of industrial and commercial purposes. Products containing our sustainable ingredients can be found in homes across the world. 

Read more about how we repurpose what others would consider waste in our blog article "A Second Life for Meat Scraps & Used Cooking Oil."


Our Company is Answering the World's Need for Sustainable, Low Carbon Fuels

Watch this short video as Randall Stuewe, Darling Ingredients' CEO, gives an update at our DGD facility located outside New Orleans, Louisiana.

Domestic Biofuel Production Provides U.S. Jobs and Reduces Fuel Imports

Anticipating a rising need for sustainable fuel solutions among the world’s growing population, Darling Ingredients, DAR PRO’s parent company, pioneered the commercial production of biodiesel from recycled animal fats and used cooking oils.

Our Biodiesel Production:

Kentucky biodiesel: Our Butler, KY, biodiesel plant began operating in the 1990s. It was the first commercial operation in the U.S. to produce clean, efficient biodiesel from animal fats and used cooking oils. Our biodiesel meets all ASTM D6751 specifications and reduces emissions by up to 85% compared to petroleum diesel.

Quebec biodiesel: We were also the first company in Canada to operate a commercial animal fat and used cooking oil biodiesel facility. The Darling Ingredients Canadian brand, Rothsay, produces approximately 45 million liters of biodiesel per year, reducing greenhouse gas emissions by up to 85% as compared to petroleum diesel.

Our Renewable Diesel Production:

Louisiana renewable diesel: In 2013, we began production at our Diamond Green Diesel (DGD) facility outside of New Orleans. This is the largest operation in North America to produce renewable diesel (or "green diesel") from recycled animal fats, used cooking oils and distiller oils. DGD converts 2.3 billion pounds of animal fats and cooking oils into 275 million gallons of renewable diesel, annually. A current expansion is underway to again double production to over 675 million gallons, targeted for completion in 2021.

What is the difference between diesel fuel, biodiesel and renewable diesel? Put simply:

  • Renewable diesel, unlike biodiesel, is produced in a way that yields a biofuel chemically identical to petroleum diesel, but...
  • ... is a low carbon biofuel that emits up to 85 percent less greenhouse gases than petroleum diesel, and...
  • ...has no cold flow issues or transportation restraints.
  • Renewable diesel can be dropped into the existing pipeline for distribution to diesel retailers or sold as a low carbon alternative to petroleum diesel. 
  • Renewable diesel benefits from its higher cetane rating between 75 and 90, versus 48 to 55 for petroleum diesel, which means...
  • ... renewable diesel burns more completely — and therefore cleaner — than petroleum diesel.
  • Biodiesel's cetane varies depending if it's sourced from cooking oils or animal fats, scoring between 46 to 60.

For information on how your fat or grease can become biofuel, call (855) DAR-PRO1, 24/7