Journal ArticleDOI
A comparison of avoided greenhouse gas emissions when using different kinds of wood energy
TLDR
In this paper, micro-level data from wood energy producers in Hedmark County were gathered and analyzed to find how much greenhouse gas (GHG) emissions various kinds of wood energy cause (not only CO2, but also CH4 and N2O), which energy they substitute, their potential to reduce GHG emissions, and the major sources of uncertainty.Abstract:
In this study, micro-level data from wood energy producers in Hedmark County were gathered and analysed. The aim was to find how much greenhouse gas (GHG) emissions various kinds of wood energy cause (not only CO2, but also CH4 and N2O), which energy they substitute, their potential to reduce GHG emissions, and the major sources of uncertainty. The method was life cycle assessment. Six types of wood energy were studied: fuel wood, sawdust, pellets, briquettes, demolition wood, and bark. GHG emissions over the life cycle of the wood energy types in this study are 2–19% of the emissions from a comparable source of energy. The lowest figure is for demolition wood substituting oil in large combustion facilities, the highest for fuel wood used in dwellings to substitute electricity produced by coal-based power plants. Avoided GHG emissions per m3 wood used for energy were from 0.210 to 0.640 tonne CO2-equivalents. Related to GWh energy produced, avoided GHG emissions were from 250 to 360 tonne CO2-equivalents. Avoided GHG emissions per tonne CO2 in the wood are 0.28–0.70 tonne CO2-equivalents. The most important factors were technology used for combustion, which energy that is substituted, densities, and heating values. Inputs concerning harvest, transport, and production of the wood energy are not important. Overall, taking the uncertainties into account there is not much difference in avoided GHG emissions for the different kinds of wood energy.read more
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Journal ArticleDOI
Life cycle assessment of bioenergy systems: state of the art and future challenges.
TL;DR: This work performs a review of the recent bioenergy LCA literature, and a qualitative interpretation of the LCA results is depicted, focusing on energy balance, GHG balance and other impact categories.
Journal ArticleDOI
CO2 emissions from biomass combustion for bioenergy: atmospheric decay and contribution to global warming
Francesco Cherubini,Glen P. Peters,Terje Koren Berntsen,Anders Hammer Strømman,Edgar G. Hertwich +4 more
TL;DR: In this paper, a method to estimate the climate impact of CO2 emissions from biomass combustion is proposed, which uses CO2 impulse response functions (IRF) from C cycle models in the elaboration of atmospheric decay functions for biomass-derived CO 2 emissions.
Journal ArticleDOI
Assessment and optimization of forest biomass supply chains from economic, social and environmental perspectives – A review of literature
Claudia Cambero,Taraneh Sowlati +1 more
TL;DR: In this article, the authors present a review of studies that assessed or optimized economic, social and environmental aspects of forest biomass supply chains for the production of bioenergy and bioproducts.
Journal ArticleDOI
Sustainable utilisation of forest biomass for energy - possibilities and problems: policy, legislation, certification, and recommendations and guidelines in the Nordic, Baltic, and other European countries.
Inge Stupak,Antti Asikainen,M. Jonsell,Erik Karltun,A. Lunnan,Diana Mizaraite,Karri Pasanen,Henn Pärn,Karsten Raulund-Rasmussen,Dominik Röser,Martin Schroeder,I. Varnagiryte,Lelde Vilkriste,Ingeborg Callesen,Nicholas Clarke,Talis Gaitnieks,Morten Ingerslev,Malle Mandre,Remigijus Ozolinčius,Anna Saarsalmi,Kęstutis Armolaitis,Heljä-Sisko Helmisaari,A. Indriksons,L. Kairiukstis,Klaus Katzensteiner,A. Kukkola,Katri Ots,Hans Peter Ravn,Pekka Tamminen +28 more
TL;DR: In this article, the authors reviewed the contents of recommendations, guidelines, and other synthesis publications on sustainable use of forest biomass for energy and identified the extent to which wood for energy is included in forest legislation and forest certification standards under the Programme for the Endorsement of Forest Certification (PEFC) and the FSC schemes.
Journal ArticleDOI
Soil Organic Carbon Changes in the Cultivation of Energy Crops: Implications for GHG Balances and Soil Quality for Use in LCA
TL;DR: In this paper, the authors quantified the environmental impact of different land-use systems for energy, up to the farm or forest “gate”, with Life Cycle Assessment (LCA), and four representative crops are considered: OilSeed Rape (OSR), Miscanthus, Short-Rotation Coppice (SRC) willow and forest residues.
References
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Journal ArticleDOI
Carbon pools and flux of global forest ecosystems.
Robert K. Dixon,Allen M. Solomon,Sandra Brown,Richard A. Houghton,M. C. Trexier,J. Wisniewski +5 more
TL;DR: Slowing deforestation, combined with an increase in forestation and other management measures to improve forest ecosystem productivity, could conserve or sequester significant quantities of carbon.
Journal ArticleDOI
The role of forest and bioenergy strategies in the global carbon cycle
TL;DR: In this article, the authors use the GORCAM (Graz/Oak Ridge Carbon Accounting Model) to examine the impact of alternative forest and bioenergy strategies and their impact on net CO 2 emissions.
Journal ArticleDOI
Wood-based building materials and atmospheric carbon emissions
Andrew H. Buchanan,S.Bry Levine +1 more
TL;DR: In this article, the global impact of wood as a building material by considering emissions of carbon dioxide to the atmosphere was investigated, and it was shown that wood buildings require much lower process energy and result in lower carbon emissions than buildings of other materials such as brick, aluminium, steel and concrete.
Journal ArticleDOI
Reducing CO2 emissions by substituting biomass for fossil fuels
TL;DR: In this article, the efficiency of substituting fossil fuels with sustainably-produced biomass will reduce the net flow of CO2 to the atmosphere and the substitution costs are calculated as the cost difference between continued use of fossil fuels at current prices and the use of biomass, assuming that the biomass technologies are implemented when reinvestments in existing technologies are required.