Skip to main content

Turning Grease & Animal Byproducts into Biodiesel

Turning Grease & Byproducts into Biodiesel


By James Davis

Biodiesel is a clean-burning alternative fuel that is produced from renewable resources, including animal byproducts and grease. In this blog, we will explore the process of how these materials are transformed into biodiesel.



The first step in the production of biodiesel is the collection of grease and animal byproducts. These materials are typically obtained from sources such as slaughterhouses, grease traps, and rendering plants. The grease and animal byproducts are then transported to a biodiesel production facility where they undergo a series of processing steps.

Once the grease and animal byproducts arrive at the facility, they are cleaned and processed to remove any impurities, such as water and solids. This step is crucial to ensure the quality of the final biodiesel product.

The next step is the conversion of the grease and animal byproducts into fatty acids. This is done through a process called transesterification, which involves the use of an alcohol, such as methanol, and a catalyst, such as sodium or potassium hydroxide. The reaction results in the formation of fatty acid methyl esters (FAMEs), which are the building blocks of biodiesel.

The FAMEs are then purified and dried to remove any remaining impurities. This step is important to ensure that the final biodiesel product meets the quality standards set by the American Society for Testing and Materials (ASTM).

After the purification and drying steps, the FAMEs are blended with a diesel fuel to form the final biodiesel product. The biodiesel is then tested to ensure that it meets the required standards for use as a fuel.

Finally, the biodiesel is ready for use as a renewable alternative to traditional diesel fuel. It can be used in any diesel engine without any modifications, and it provides many benefits, including reduced emissions of harmful pollutants, improved fuel economy, and increased energy independence.

In conclusion, the production of biodiesel from grease and animal byproducts is a multi-step process that involves the collection and processing of these materials, the conversion of the fatty acids into FAMEs, purification and drying, blending with diesel fuel, and testing to ensure quality standards. Biodiesel provides a clean, renewable alternative to traditional diesel fuel, and its production helps to reduce waste and increase energy independence.