The question is, are biofuels really a solution to the global energy crisis? Are they really sustainable? The main issue is the low photosynthetic efficiency of solar energy conversion to fuel or biomass. The efficiency is so low that the amount of energy obtained in the biofuel is apparently lower than the energy that was invested to produce it.
Perhaps it is possible to enhance photosynthesis to the point that biofuels become truly a solution... in our recent opinion paper we have discussed some recent approaches at improving photosynthesis.
Photosynthetic constraints on fuel from microbes
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| Grown algae - By IGV Biotech (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons |
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