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How Is Biodiesel Made and Used?

Washakie Renewable Energy

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Operating out of Salt Lake City, Utah, Washakie Renewable Energy is the lead manufacturer of biodiesel in the Intermountain West area. By meticulously managing each step of the development process, Washakie Renewable Energy consistently produces high-quality, environmentally friendly biodiesel and other biofuels.

Biodiesel is made using the transesterification chemical process. Although it has many applications, in this case it involves extracting usable components from recycled cooking grease, vegetable oils, and animal fats. This refining procedure yields two products: methyl esters—fatty acids that make up the actual fuel—and glycerin, a by-product used in the manufacture of cosmetic and pharmaceutical products. In order to be considered fuel-grade, biodiesel must adhere to the strict specifications outlined in ASTM D6751.

Biodiesel can be used in most diesel engines, either in pure form or mixed with petroleum diesel. The most common blends include B2, B5, and B20, with the number representing the percentage of biodiesel used in the mixture.