Replacing fossil energy for organic milk production - potential biomass sources and greenhouse gas emission reductions

Sammanfattning

There is a growing awareness of the climate impact of agricultural production, not least from cattle farms. Major sources of GHG emissions from milk production are enteric fermentation followed by fossil fuel use and manure/soil management systems. This study analyzes the potential to eliminate fossil fuel use from milk production farms in Sweden, by using residual farm resources of biomass to obtain self-sufficiency in fuel, heat and electricity. The change from a fossil-based energy system to a renewable system based on A) Biogas based on manure and straw and B) Biogas based on manure+RME were analyzed with consequential life cycle assessment (CLCA) methodology. Focus was energy use and GHG emissions and the functional unit was 1kg of energy-corrected milk (ECM). The results show that organic milk producers can become self-sufficient in energy and reduce total GHG emissions from milk production by 46% in the Biogas system, or 32% in the Biogas+RME system compared to the Fossil system.

Nyckelord

Organic agriculture; Biomass; Biogas; Biodiesel; Life cycle assessment; Methane

Publicerad i

Journal of Cleaner Production
2015, volym: 106, sidor: 400-407

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
    

• Bernesson, Sven

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

• Hansson, Per-Anders

  • Institutionen för energi och teknik, Sveriges lantbruksuniversitet
    

Globala målen (SDG)

SDG7 Hållbar energi för alla
SDG12 Hållbar konsumtion och produktion

UKÄ forskningsämne

Förnyelsebar bioenergi
Jordbruksvetenskap
Miljö- och naturvårdsvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1016/j.jclepro.2014.03.044

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/68946