Ethanol can contribute to energy and environmental goals - PubMed

Affiliations

• PMID: 16439656
• DOI: 10.1126/science.1121416

Ethanol can contribute to energy and environmental goals

Alexander E Farrell et al. Science. 2006.

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.

Comment in

• Harvesting our meadows for biofuel?

  Palmer MW. Palmer MW. Science. 2006 Jun 23;312(5781):1745-6; author reply 1745-6. doi: 10.1126/science.312.5781.1745. Science. 2006. PMID: 16794061 No abstract available.

• Energy returns on ethanol production.

  Cleveland CJ, Hall CA, Herendeen RA. Cleveland CJ, et al. Science. 2006 Jun 23;312(5781):1746-8; author reply 1746-8. doi: 10.1126/science.312.5781.1746. Science. 2006. PMID: 16794062 No abstract available.

• Energy returns on ethanol production.

  Hagens N, Costanza R, Mulder K. Hagens N, et al. Science. 2006 Jun 23;312(5781):1746-8; author reply 1746-8. Science. 2006. PMID: 16800048 No abstract available.

• Energy returns on ethanol production.

  Lynd L, Greene N, Dale B, Laser M, Lashof D, Wang M, Wyman C. Lynd L, et al. Science. 2006 Jun 23;312(5781):1746-8; author reply 1746-8. Science. 2006. PMID: 16800049 No abstract available.

• Energy returns on ethanol production.

  Kaufmann RK. Kaufmann RK. Science. 2006 Jun 23;312(5781):1746-8; author reply 1746-8. Science. 2006. PMID: 16800050 No abstract available.

• Energy returns on ethanol production.

  Patzek TW. Patzek TW. Science. 2006 Jun 23;312(5781):1746-8; author reply 1746-8. Science. 2006. PMID: 16800051 No abstract available.

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