Biomass used to make biofuels must be carefully sourced, or the biofuels they produce may be no greener than conventional jet fuel.
That's according to a study that was published this week in the online version of Environmental Science and Technology and was conducted by a group of scientists at the Massachusetts Institute of Technology.
For the nearly four-year study, researchers conducted a life cycle analysis on 14 diesel and jet fuel sources made from feedstocks, and identified the key factors that make a difference in whether a biofuel is truly an environmental improvement over conventional jet fuel.
Source: CNET News
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