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Renewability and life-cycle energy efficiency of bioethanol and bio-ethyl terti...

Biofuels are expected to play an increasingly important role in the transportation market, as we search for ways to reduce fossil fuels depletion and emissions. However, the extent to which biofuel can displace petroleum-based fuels depends on the efficiency with which it can be produced. To demonstrate that biofuel has a positive energy balance--i.e. more energy is contained in the fuel than is used in the pro...