making, biofuel

Making BioFuel

WHAT BIOFUEL IS, WHAT IT DOES AND HOW IT IS USED

Biodiesel, or biofuel, is a clean burning alternative engine fuel that is created by chemically reacting fatty acids and alcohol.
This process of making biofuel is called TRANSESTERIFICATION.

In basic terms, the process uses recycled cooking oils and animal fats which are subjected to heat (usually 60oC) and blended with alcohol (methanol) in the presence of a catalyst (potassium or sodium hydroxide).

This process forms fatty esters such as methyl ester (100% biodiesel) and glycerine (a by-product of the reaction).

Biodiesel should not be confused with straight sieved vegetable oil which is not a legal motor fuel.
It will not fully combust and over time will leave a film deposit blocking the fuel injectors. This may can then lead to uncombusted oil seeping through the rings and into the engine sump thus having a dramatic effect on engine lubrication!

The ideal waste cooking oils used for making biofuel are rapeseed, sunflower and soya whose melt temperatures are more suitable to our northern European climate. However palm and other thicker oils can be used by introducing additional heat at the start of the procedure. Another positive aspect of using biodiesel over fossil fuels is that biodiesel releases less emissions, which is less damaging to human health.

Properly made biodiesel has many environmentally beneficial properties:
  • CARBON NEUTRAL
  • BIODEGRADABLE
  • NON TOXIC
  • LOWERED FLASH POINT