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Biodiesel takes the lead in biofuel battle

发布时间:2019-03-02 08:15:05来源:未知点击:

In the battle of the biofuels, biodiesel turns out to be greener than ethanol. Sadly, neither will go very far to replace petrol and diesel in our vehicles, however. David Tilman at the University of Minnesota in St Paul and his colleagues have worked out the environmental costs of producing ethanol from maize and biodiesel from soybeans. Their calculations include the fuel needed to make and run farm machinery, and make pesticides and fertilisers. Tilman and colleagues found that using ethanol would only reduce greenhouse gas emissions by 12 per cent compared with petrol,