Energy balance of switchgrass grown for cellulosic ethanol in the Northern Plains, USA

Marty R. Schmer, Kenneth P. Vogel, Robert B. Mitchell, Richard K. Perrin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Switchgrass (Panicum virgatum L.) is a potential, herbaceous feedstock for cellulosic ethanol in the USA. Estimates on switchgrass energy inputs and ethanol energy yields are highly variable and are largely based on small-plot research. A five-year, field-scale trial was completed on 10 farms in the Northern Great Plains to evaluate the energy balance for switchgrass grown for cellulosic ethanol. Energy balances were calculated using the energy and resources group biofuel analysis meta-model (EBAMM) model based on known farm inputs. Nitrogen fertilizer, diesel fuel, and herbicides accounted for 62, 17, and 10%, respectively, of average agricultural energy inputs. Net energy values averaged 21.6 MJ L-1 with a range of 16.9 to 23.7 MJ L-1 for the ten farms. The EBAMM model showed that switchgrass on average produced an estimated 13.5 MJ of ethanol for one MJ input of petroleum.

Original languageEnglish (US)
Title of host publication233rd ACS National Meeting, Abstracts of Scientific Papers
StatePublished - 2007
Event233rd ACS National Meeting - Chicago, IL, United States
Duration: Mar 25 2007Mar 29 2007

Publication series

NameACS National Meeting Book of Abstracts
ISSN (Print)0065-7727

Conference

Conference233rd ACS National Meeting
Country/TerritoryUnited States
CityChicago, IL
Period3/25/073/29/07

ASJC Scopus subject areas

  • General Chemistry
  • General Chemical Engineering

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