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Bio Diesel & Diesel Difference

Bio Diesel & Diesel Difference

Biodiesel and diesel are both types of fuels, but they have distinct differences in terms of their composition, production methods, and environmental impact. Here are the key differences between biodiesel and diesel:

Source of Origin:

  • Diesel: Conventional diesel fuel is derived from crude oil through a refining process. It is a fossil fuel and a hydrocarbon-based liquid.
  • Biodiesel: Biodiesel is a renewable fuel made from biological sources such as vegetable oils, animal fats, or recycled cooking grease. It is a type of biofuel.


  • Diesel: Conventional diesel is composed of hydrocarbons, which are organic compounds made up of hydrogen and carbon atoms.
  • Biodiesel: Biodiesel is composed of fatty acid methyl esters (FAME) or fatty acid ethyl esters (FAEE), which are produced through a chemical process called transesterification. Transesterification involves reacting the triglycerides in oils or fats with an alcohol (usually methanol or ethanol) to produce biodiesel and glycerol.


  • Diesel: Diesel fuel is non-renewable and comes from finite fossil fuel resources.
  • Biodiesel: Biodiesel is considered renewable because it is produced from plant or animal-derived sources that can be replenished.

Environmental Impact

  • Diesel: Conventional diesel combustion releases carbon dioxide (CO2) and other pollutants, contributing to air pollution and climate change.
  • Biodiesel: Biodiesel generally produces lower levels of greenhouse gas emissions compared to conventional diesel. It is often promoted as a cleaner-burning alternative, with reduced emissions of sulfur and particulate matter.


  • Diesel: Conventional diesel fuel can be used in diesel engines without modification.
  • Biodiesel: Biodiesel can be used in diesel engines with little or no modification. It is often blended with conventional diesel fuel to create biodiesel blends, such as B20 (20% biodiesel, 80% diesel) or B5 (5% biodiesel, 95% diesel).

Energy Content

  • Diesel: Diesel fuel typically has a higher energy content per unit volume compared to biodiesel.
  • Biodiesel: Biodiesel has a slightly lower energy content than conventional diesel fuel, which may result in slightly reduced fuel economy.