What is biofuel and how sustainable is it really?

Biofuel. A hot topic in the world of energy. It is mainly used in transport (cars, trucks and planes), but environmentally friendly generators, for example, also run on it. Companies and governments are therefore increasingly betting on it. Indeed, fuel suppliers are now required to blend biofuels. But what exactly is biofuel? What are the advantages and disadvantages? But is it as sustainable as they claim, or are there better alternatives?

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What is biofuel?

Biofuel is the collective name for fuels made from biomass. Unlike fossil fuels, biofuels are renewable. This means that the source can be used again and again to produce fuel. In the fight against climate change and towards a more sustainable world, they are therefore receiving increasing attention.

Examples of biofuel

There are different types of biofuel:

  • First generation
    First-generation biofuels are mainly made from food. For example, a chemical process is used to make bioethanol from sugar cane, corn and grain. And from vegetable oils and animal fats again form the basis of biodiesel.
  • Second generation
    Second-generation biofuel is made from plants and fats not intended for consumption. You can think of straw, wood chips, used frying fat or even residual waste.
  • Third generation
    Third-generation biofuel uses even less harmful sources as fuel. In practice, this mainly means algae and seaweed. However, the technology for cost-effective energy production from these sources is still under development.

Is biofuel sustainable?

Biofuel sounds sustainable. After all, no fossil fuel is used and the sources are renewable. Yet it is not as sustainable as you might think. A lot of energy is (still) needed to produce the fuel and to transport it. In addition, CO2 and nitrogen are still released during combustion and forests are cut down to release agricultural land for biomass production.

Advantages & disadvantages of biofuel

Using biofuel has several advantages and disadvantages:

  • Advantage
    The big advantage of biofuel is, of course, that it is more environmentally friendly than fossil fuels. Yes, it releases CO2. But that is usually the same CO2 that the biomass took out of the air during their growth. That makes it climate-neutral. In addition, with biofuels we are also no longer dependent on oil-producing countries from, say, the Middle East.
  • Disadvantage
    The disadvantage of biofuel is that CO2 is now also emitted during production and transport. This reduces profits or even causes more CO2 to be released into the atmosphere. Increased production also requires more agricultural land. This is at the expense of nature and causes competition with food crops. Especially with first generation fuels!

Alternative for biofuel: solar energy

Biomass is one of the ways you can generate electricity sustainably. Just like from wind, water and the sun. Of all these renewable sources, solar energy is the most sustainable. Solar panels do not affect local nature, do not cause nuisance and do not emit CO2. Nothing. With that, the emissions from production are often recovered within a few years.

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