Life cycle assessment of energy self-sufficiency systems based on agricultural residues for organic arable farms

Abstract

The agricultural industry today consumes large amounts of fossil fuels. This study used consequential life cycle assessment (LCA) to analyse two potential energy self-sufficient systems for organic arable farms, based on agricultural residues. The analysis focused on energy balance, resource use and greenhouse gas (GHG) emissions. A scenario based on straw was found to require straw harvest from 25% of the farm area: 45% of the total energy produced from the straw was required for energy carrier production and GHG emissions were reduced by 9% compared with a fossil fuel-based reference scenario. In a scenario based on anaerobic digestion of ley, the corresponding figures were 13%, 24% and 35%. The final result was sensitive to assumptions regarding, e.g., soil carbon content and handling of by-products. (C) 2010 Elsevier Ltd. All rights reserved.

Keywords

LCA; Agricultural residues; Energy self-sufficiency; Organic farming

Published in

Bioresource Technology
2011, volume: 102, number: 2, pages: 1425-1432
Publisher: ELSEVIER SCI LTD

SLU Authors

• Kimming, Marie

  • Department of Energy and Technology, Swedish University of Agricultural Sciences
    

• Sundberg, Cecilia

  • Department of Energy and Technology, Swedish University of Agricultural Sciences
    

• Nordberg, Åke

  • Department of Energy and Technology, Swedish University of Agricultural Sciences
    
  • Swedish Institute of Agricultural and Environmental Engineering (JTI)

• Bernesson, Sven

  • Department of Energy and Technology, Swedish University of Agricultural Sciences
    

• Hansson, Per-Anders

  • Department of Energy and Technology, Swedish University of Agricultural Sciences
    

Global goals (SDG)

SDG2 Zero hunger
SDG12 Responsible consumption and production

UKÄ Subject classification

Agricultural Science
Renewable Bioenergy Research

Publication identifier

• DOI: https://doi.org/10.1016/j.biortech.2010.09.068

Permanent link to this page (URI)

https://res.slu.se/id/publ/60133