How Biodiesel and Diesel Differ

Many people have heard the term biodiesel recently, and are wondering what it is exactly and if it is different from regular diesel fuel.

Diesel from oil consists of a combination of paraffin and cyclo-paraffin hydrocarbons. The combustion of this oil and air in normal engines creates residual smoke particles of varying dimensions. It also typically contains a high content of sulphur and produces chemicals that are known to exist in acid rain as they form sulfuric acid.

Biodiesel is actually a type of diesel fuel that is made out of chemically-reacting lipids such as vegetable oil and/or animal fat. It is usually made by combining the oil and fat with some type of alcohol. The product is designed to be used as a fuel in standard types of diesel engines. This makes it different from waste and vegetable oils that are utilized in converted diesel engines. You can use biodiesel on its own, as well as a blend with petro diesel.

Biodiesel is a golden or dark brown liquid form that is immiscible with water. It has a high boiling point and low vapour pressure. The flash point of biodiesel is quite a bit higher than petroleum diesel and gasoline. The fuel has almost no sulphur in it and is often added to Ultra-Low Sulfur Diesel (ULSD) fuel.

In most countries, a B factor is used to indicate how much biodiesel there is in a fuel mix. For example, a fuel that has 25 per cent biodiesel in it is known as B25. Pure biodiesel is named B100. Blends that mix 20 per cent biodiesel along with 80 per cent petroleum diesel can typically be utilized in unmodified types of diesel engines. You can also use pure biodiesel, but this may lead to some engine modifications in order to prevent performance and maintenance issues. Pure and blended biodiesel may be utilized with petroleum diesel at any rate of blend in the majority of injection pump diesel engines. However, some high pressure rail engines possess strict limits on the levels. Biodiesel differs from petro diesel as it possesses different solvent properties, and it will erode the natural rubber hoses and gaskets in most vehicles produced before 1992.

Biodiesel has also been reported to break down residue deposits in any fuel lines in which petro diesel have been used. This may lead to clogged fuel filters if a quick switch to 100 per cent biodiesel is made. If you switch to biodiesel, it is suggested to switch fuel filters on heaters and engines soon after changing to a biodiesel mixture.

One of the most popular features of biodiesel is the fact it can cut down on the direct tailpipe-emission of particulates on some vehicles when compared to fossil-sourced diesel. Biodiesel possesses a higher cetane rating than petro diesel. This can lead to improved performance and cleaner emissions compared to crude petro diesel.

Most biodiesel is produced in Europe. It is also used in railway trains and aircrafts and is also useful as a heating fuel. In the coming years, we may see biodiesel become one of the most popular forms of fuel on the planet.

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