What is biodiesel?

After waste is pretreated and it undergoes several chemical reactions, it is turned into biodiesel, which is suitable for use in diesel internal combustion engines. This product is then mixed with diesel fossil fuel at different percentages which helps reduce emissions.

Biofuels originating from vegetable oil and waste animal fats don’t contain heavy materials and have significantly reduced greenhouse gas emissions.

BioArag produces biodiesel in accordance with European and American regulations, adhering to the UNE EN and ASTM D6751 standards.



Glycerol is obtained as a byproduct of the biodiesel production process during the transesterification stage. It has several different uses: in biogas plants, as an additive in construction, in the pharmaceutical and cosmetics industries and in the food and chemical sectors.


Potassium sulfate is also created as a byproduct during production of biodiesel. Its main use is to enrich soils for growing crops, nourishing them in such a way that leads to significant improvements in crop formation and yield.


A byproduct obtained during the distillation process of the biofuel, most commonly used in boilers and for maritime transport thanks to its high calorific value.

Advantages of producing biodiesel

Renewable energy
Less CO2 in the atmosphere.
Less pollution.
Increased engine life.

The process

BDI Multi-Feedstock Technology

A sophisticated operation system in the production process which ensures high quality standards.
Multi-feedstock technology enables us to process a wide range of different types of raw materials.

Stages of the production process

We have two acid esterification units which allow us to process raw materials with a low acidity as well as those with an acidity of up to 45%, giving us the possibility of processing 100% FFA mixtures with low acidity.

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