making, biofuel

Making Biodiesel (B100)

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

Biodiesel (B100) is a Biofuel which can be used as a clean burning alternative to mineral/forecourt diesel 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).

Using the processors we support, you will be making 100% biodiesel, which is termed B100. This coding is also used to describe any mineral diesel / biodiesel mixtures… so that a blend consisting of 75% biodiesel and 25% mineral diesel is described as B75. Thus forecourt diesel which contains 5% biodiesel is B5.

You might also be interested to learn that these processors actually filter the biodiesel down to 10 microns – which is far superior to forecourt diesel which is supplied as filtered to 50 micron.

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