Biofuels from microalgae—A review of technologies for ...
2010-2-1 · 1. Introduction1.1.. Energy outlook and salient environmental issuesIn 2008 the annual world primary energy consumption was estimated at 11,295 million tonnes of oil equivalent (mtoe) .Fossil fuels accounted for 88% of the primary energy consumption, with oil (35% share), coal (29%) and natural gas (24%) as the major fuels, while nuclear energy and hydroelectricity account for 5% and 6% of the ...
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