Biodiesel refers to a vegetable oil or animal fat based diesel fuel consisting of a long chain alkyl (methyl, propyl or ethyl) esters. Biodiesel is usually made by chemical reaction lipids (eg, vegetable oils, animal fats (sebum)) with a spirit.

Biodiesel is intended to be used in standard diesel engines and is distinguished from the fruit and vegetable waste oil used to fuel diesel engines converted. Biodiesel can be used alone, or blended with petroleum diesel.

The term "Biodiesel" is standardized as mono-alkyl ester in the United States [1]. Blends
Biodiesel sample

Mixtures of biodiesel and regular diesel hydrocarbon-based products are the most widely used in the retail diesel fuel marketplace. Much of the world uses a system known as the "B" factor to the amount of biodiesel is a fuel mix: fuel

* 100% biodiesel is called B100, while
* 20% biodiesel is labeled B20
* 5% biodiesel is labeled B5
* 2% biodiesel is labeled B2

[2] Obviously, the higher the biodiesel content, the more ecology-friendly fuel. [3] It is common in the U.S. see as a federal tax credit B99.9 is awarded to the first entity that blends with petroleum diesel, pure biodiesel. Blends of 20 percent biodiesel with 80 percent petroleum diesel (B20) can generally be used in unmodified diesel engines. Biodiesel can also be used in its pure form (B100), but may require certain modifications to the engine maintenance and performance problems. B100 blends with petroleum diesel can be achieved by:

* Mixing in tanks at manufacturing point prior to delivery to tanker
* Splash mixing in the truck (adding specific percentages biodiesel and petroleum diesel)
* In-line mixing, two components are road tanker at.
* Metered pump mixing petroleum diesel and biodiesel meter set to X total volume transfer pump draws from two points and mix is complete when leaving the pump.

[Edit] Applications

Biodiesel can be used in pure form (B100) or can be blended with petroleum diesel at any concentration in most of the diesel injector pump. New extremely high pressure (29,000 psi) common rail engines are strict limits of the factory B5 or B20 according to the manufacturer. [Edit] Biodiesel has different properties than petroleum diesel, solvent, and will degrade natural rubber gaskets and hoses in vehicles (mostly vehicles manufactured before 1992), although they naturally tend to wear or likely to have been replaced by FKM, which nonreactive to biodiesel. Biodiesel is known to break down deposits of residue in the fuel lines where petroleum diesel is used. [4] As a result, fuel filters clogged with particulates if a quick transition to pure biodiesel is made. It is therefore recommended that the fuel filters for engines and stoves change shortly after the first steps on a biodiesel blend. [