Biofuel: What is it? What is it for?

It is also known as biofuel and is obtained thanks to the mixture of different substances that make up the biomass. A biofuel in theory is a kind of fuel less aggressive with nature than the traditional ones generally obtained from oil.

Despite coming from biological elements, some studies have confirmed that the amount of dioxide generated after combustion is similar to fossil fuels; Due to this, some specialists argue that referring to this as a renewable or environmentally friendly substance is something improper.

For the production of biofuel, agricultural species such as cassava, corn, sunflower, soy, palm trees, algae, wheat, sugar cane are used; and even organic waste such as cow dung.

Environmental impact of biofuel

In theory, biofuel is a renewable energy source whose environmental impact should be less significant than that of traditional fuels; However, this theory is strongly questioned because a certain amount of agrochemicals, transgenic seeds are used in the manufacture of said substance, and large areas of forests are also dismantled.

The prefix “bio” has given a positive connotation to this type of fuel that does not really take the imagined proportions, because the environmental impact is inclined to both the positive and negative side of the balance.

Many experts have determined that despite being a renewable energy medium, it is not excluded from being a contaminant. The main cause of this is that the way it is manufactured has changed markedly since its inception; Now, some countries have taken production to an extreme where they sacrifice forests and forests for planting plant species that are beneficial for this purpose.

Types of biofuel


It is the most frequent biological fuel in some parts of the world; The biomass used for its manufacture are vegetable oils from soy, flax, sunflower, palm, mustard, rapeseed and seaweed.

This is used mixed with traditional diesel in engines that normally use this type of fuel.

Biodiesel is considered as biodegradable as sugar.


This is a biofuel that is obtained from the alcoholic fermentation of sugar contained in cane or beet. Brazil is the largest producer of bioethanol; This substance replaces gasoline very well.


It is obtained from the digestive processes carried out by anaerobic organisms in biodegradable waste substances. Biogas is used as fuel and as fertilizer in some crop fields