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

Sammanfattning

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.

Nyckelord

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

Publicerad i

Bioresource Technology
2011, volym: 102, nummer: 2, sidor: 1425-1432
Utgivare: ELSEVIER SCI LTD

SLU författare

• Kimming, Marie

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

• Sundberg, Cecilia

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

• Nordberg, Åke

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    
  • Institutet för jordbruks- och miljöteknik (JTI)

• Bernesson, Sven

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

• Hansson, Per-Anders

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

Globala målen (SDG)

SDG2 Ingen hunger
SDG12 Hållbar konsumtion och produktion

UKÄ forskningsämne

Jordbruksvetenskap
Förnyelsebar bioenergi

Publikationens identifierare

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

Permanent länk till denna sida (URI)

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