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Biofuels: harvesting sunlight to replace fossil fuels

about 04Bioreactors or open ponds are needed to grow algae commercially.

Biomass produced from fast growing algal offers many ways to generate energy - such as digestion for biogas or simply burning for combined heat and power.

Oils are produced by many algae as storage reserves, and these can be extracted and refined to make biodiesel.

Hydrogen is produced when green algae are starved of resources like sulphur, and have plenty of starch reserves.