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Ethanol can contribute to energy and environmental goals.
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Ethanol can contribute to energy and environmental goals.

Author: AE Farrell Affiliation: Energy and Resources Group, University of California, Berkeley, CA 94720-3050, USA. aef@berkeley.eduRJ PlevinBT TurnerAD JonesM O'HareAll authors
Edition/Format: Article Article : English
Publication:Science (New York, N.Y.) 2006 Jan 27; 311(5760): 506-8
Database:From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
Other Databases: ArticleFirst
Summary:
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  Read more...
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Details

Document Type: Article
All Authors / Contributors: AE Farrell Affiliation: Energy and Resources Group, University of California, Berkeley, CA 94720-3050, USA. aef@berkeley.edu; RJ Plevin; BT Turner; AD Jones; M O'Hare; DM Kammen
ISSN:0036-8075
Language Note: English
Unique Identifier: 107874125
Awards:

Abstract:

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.

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