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  • 1.
    Dornburg, Veronika
    et al.
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Eggers, Thies
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Gustavsson, Leif
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Integrated carbon analysis of biomass production on fallow agricultural land and product substitution in Sweden - preliminary results2006Conference paper (Refereed)
    Abstract [en]

    An important option in the Swedish context to reduce its net emissions of carbon dioxide (CO2) is the increased use of biomass for energy and material substitution. On fallow agricultural land additional production of biomass would be possible. We analyse biomass production systems based on Norway spruce, hybrid poplar and willow hybrids and the use of this biomass to replace fossil energy and energy intensive material systems. The highest biomass production potential is for willow in southern Sweden. Fertilisation management of spruce could shorten the rotation lengths by about 17%. The fertilised production of Norway spruce with use of harvested timber for construction and use of remaining woody biomass for heat and power production gives the largest reductions of carbon emissions per hectare under the assumptions made. The use of willow for heat and power and of fertilised spruce for a wood product mix lead to the highest fossil primary energy savings in our scenarios. Spruce cultivations can achieve considerable carbon emission reductions in the long term, but willow and poplar might be a good option when fossil energy savings and carbon emission reductions should be achieved in the short term.

  • 2.
    Eggers, Thies
    et al.
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Dornburg, Veronika
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Gustavsson, Leif
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Integrated carbon analysis of biomass production on fallow agricultural land and biomass utilisation2007Conference paper (Refereed)
    Abstract [en]

    An important option in the Swedish context to reduce its net emissions of carbon dioxide (CO2) is the increased use of biomass for energy and material substitution. On fallow agricultural land additional production of biomass would be possible. We analyse biomass production systems based on Norway spruce, hybrid poplar and willow hybrids and the use of this biomass to replace fossil energy and energy intensive material systems. The highest biomass production potential is for willow in southern Sweden. Fertilisation management of spruce could shorten the rotation lengths by about 17%. The fertilised production of Norway spruce in southern Sweden with use of harvested timber for material or construction gives the largest reductions of carbon emissions per hectare in the long term. The use of willow and poplar for heat and power and of fertilised spruce for construction lead to the highest fossil primary energy savings in southern and central Sweden. Short-rotation willow and poplar are a good option when fossil energy savings and carbon emission reductions should be achieved in the short term.

  • 3.
    Gustavsson, Leif
    et al.
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Holmberg, Jonas
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Dornburg, Veronica
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Sathre, Roger
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Eggers, Thies
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Mahapatra, Krushna
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Marland, Gregg
    Mittuniversitetet, Institutionen för teknik, fysik och matematik.
    Using biomass for climate change mitigation and oil use reduction2007In: Energy Policy, ISSN 0301-4215, E-ISSN 1873-6777, Vol. 35, no 11, p. 5671-5691Article in journal (Refereed)
    Abstract [en]

    In this paper, we examine how an increased use of biomass could efficiently meet Swedish energy policy goals of reducing carbon dioxide (CO2) emissions and oil use. In particular, we examine the trade-offs inherent when biomass use is intended to pursue multiple objectives. We set up four scenarios in which up to 400 PJ/year of additional biomass is prioritised to reduce CO2 emissions, reduce oil use, simultaneously reduce both CO2 emission and oil use, or to produce ethanol to replace gasoline. Technologies analysed for using the biomass include the production of electricity, heat, and transport fuels, and also as construction materials and other products. We find that optimising biomass use for a single objective (either CO2 emission reduction or oil use reduction) results in high fulfilment of that single objective (17.4 Tg C/year and 350 PJ oil/year, respectively), at a monetary cost of 130–330 million €/year, but with low fulfilment of the other objective. A careful selection of biomass uses for combined benefits results in reductions of 12.6 Tg C/year and 230 PJ oil/year (72% and 67%, respectively, of the reductions achieved in the scenarios with single objectives), with a monetary benefit of 45 million €/year. Prioritising for ethanol production gives the lowest CO2 emissions reduction, intermediate oil use reduction, and the highest monetary cost.

1 - 3 of 3
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  • harvard1
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