Biofuels are renewable fuels derived from organic matter such as plant material, vegetable oils, and animal fats. They are seen as a potential alternative to fossil fuels due to their lower greenhouse gas emissions and potential to reduce dependence on non-renewable resources
Biofuels have great economic and environmental potential as an alternative to an overwhelming reliance on fossil fuels. As a vital part of the global agricultural supply chain, Tradelink recognizes this potential use of clean energy generated sustainably from biomass-rich fields. Unlike fossil fuels such as petroleum or coal, bio-fuels are readily replenished. Power generated from bio-fuels is renewable as well as cleaner.
Historically, humans have been using widely available biofuels for a long time. Materials like wood have been burnt to generate heat energy throughout civilization. Biomass was used as the main source of energy until the early 20th century. With better technology, we are now able to make efficient use of the same.
Raw materials of Biofuels
Biofuels are developed from biomass generated in the agriculture sector using methods such as chemical reactions, fermentation and application of heat, which breaks down the components of the raw materials, which are then refined.
The use of some of these materials is more economically developed than others:
- Corn
- Sugarcane
- Soybean
- Oil Palm
- Wood chips
- Crop residues
- Grass
- Algae
- Cyanobacteria
- Waste feedstock
- Used vegetable oils and animal fats
Types of Biofuels
The main types of bio-fuels are
- Ethanol
It is used mainly in transportation in pure form or by blending with gasoline. Its leading producers are the United States and Brazil which develop it from corn and sugarcane respectively.
- Bio-diesel
Mostly used in Europe, it is developed from vegetable oils and animal fats. It is used in pure form or blended with diesel to reduce harmful emissions.
- Green diesel
This biofuel is made from algae and other plants.
- Bio-gas
Biogas is methane usually produced from animal waste.
Optimizing the Benefits of Biofuels
Biofuels have fewer harmful emissions and can lead to energy security and economic growth. They can be a cost-effective and environmentally friendlier option in a world rapidly facing the consequences of global warming. Yet critics have cautioned about higher costs and food-versus-fuel use of crops leading to hunger. Drastic changes in land use can also lead to loss of habitat and biodiversity.
The way forward with biofuels can be paved with careful evaluation of costs-versus-benefits. Evolving technologies can be applied to optimize benefits and minimize costs. We need to consider the environmental costs of production in balance with consumption benefits. Different raw materials may have varying potentials for carbon neutrality.
The use of biofuels is on the rise in many parts of the world. Its smart application can be aided by government subsidies, tax incentives and new technology such as carbon capture and storage. The key determinant would be its sustainable development leading to a new paradigm of responsible energy use in harmony with the environment.
Student of Climate Change
