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Ethanol Can Contribute to Energy and Environmental Goals
Ist Teil von
Science (American Association for the Advancement of Science), 2006-01, Vol.311 (5760), p.506-508
Ort / Verlag
Washington, DC: American Association for the Advancement of Science
Erscheinungsjahr
2006
Quelle
American Association for the Advancement of Science
Beschreibungen/Notizen
To study the potential effects of increased biofuel use, we evaluated six representative analyses of fuel ethanol. Studies that reported negative net energy incorrectly ignored coproducts and used some obsolete data. All studies indicated that current corn ethanol technologies are much less petroleum-intensive than gasoline but have greenhouse gas emissions similar to those of gasoline. However, many important environmental effects of biofuel production are poorly understood. New metrics that measure specific resource inputs are developed, but further research into environmental metrics is needed. Nonetheless, it is already clear that large-scale use of ethanol for fuel will almost certainly require cellulosic technology.