Biodiesel is a substitute for petroleum based diesel that is derived from natural fats or oils.

Biodiesel is prepared from any natural fat or oil by chemically exchanging all of the glycerin portion of the fat/oil with an alcohol, typically methanol.  This chemical process can be seen in the following diagram.

The biodiesel, in this example is methyl oleate, and can be used in any existing diesel engine with little or no modification.  The conversion to biodiesel is necessary because the fats and oils cannot be burned in a diesel engine without seriously degrading the engine performance over time, along with highly increased emissions. Fats and oils are also solid at lower temperatures and will not allow the engine to run without first being heated.

GroDiesel provide the Barryon Refinery that most efficiently converts most animal and vegetable fats into EN14214/ASTM D6751 quality biodiesel. GroDiesel can be blended with petroleum based diesel at any concentration to give better lubricity, lower emissions and to offset oil dependence.