Quick Answer
Biodiesel laws and regulations vary by country and state, but many have specific standards for blending percentages, sulfur content, and engine compatibility.
Biodiesel Standards and Regulations
In the United States, the Environmental Protection Agency (EPA) sets the standards for biodiesel blends. Biodiesel can be blended with petroleum diesel in various percentages, from B5 (5% biodiesel, 95% petroleum diesel) to B100 (100% biodiesel). The American Society for Testing and Materials (ASTM) sets the standards for biodiesel quality, including its sulfur content.
Engine Compatibility and Emissions
Not all diesel engines are compatible with biodiesel, and using the wrong type of fuel can cause engine damage or performance issues. Biodiesel can be used in vehicles with engines that have been designed to run on it, but using it in engines not designed for biodiesel can lead to premature wear and tear on engine components. Biodiesel also produces lower emissions than traditional diesel fuel, including particulate matter, carbon monoxide, and hydrocarbons.
Compliance and Labeling Requirements
To ensure compliance with regulations, biodiesel must be labeled with its percentage of biodiesel and its ASTM certification. The label must also include the biodiesel’s flash point, viscosity, and other relevant characteristics. In the United States, the EPA requires that all biodiesel sold for use in diesel engines be registered with the EPA and comply with its regulations.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.