Biofuels and Bioenergy

Algae Biofuels

As the demand for sustainable and low-carbon energy sources grows, algae biofuels have gained significant attention as a next-generation alternative to fossil fuels. Algae-based biofuels are derived from microalgae and macroalgae that can efficiently convert sunlight, carbon dioxide, and nutrients into biomass rich in lipids, carbohydrates, and proteins. These components can be further processed into various biofuels, including biodiesel, bioethanol, biogasoline, and jet fuel. Algae have a much higher growth rate and biomass productivity compared to terrestrial crops. Certain microalgae species can double their biomass in a few hours to a few days, making them a highly efficient feedstock for biofuel production. Unlike first-generation biofuels, which rely on food-based feedstocks like corn and sugarcane, algae can grow in non-arable land, wastewater, or saltwater, reducing competition with food production. Many algae species have high oil content (20–50%), making them ideal for biodiesel production through transesterification. This biodiesel can be used in existing diesel engines with minimal modifications. Algae biofuels hold immense potential to become a mainstream renewable energy source.