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Time-dependent climate impact of short rotation coppice willow–based systems for electricity and heat production

Ericsson, Niclas (2015). Time-dependent climate impact of short rotation coppice willow–based systems for electricity and heat production. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2015:96
ISBN 978-91-576-8390-8
eISBN 978-91-576-8391-5
[Doctoral thesis]

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Abstract

Fossil fuel use and man-made land use change has increased carbon dioxide (CO₂) levels in the atmosphere, contributing to climate impacts such as global warming. Perennial crops such as short rotation coppice (SRC) willow have received attention because of their potential to sequester carbon (C) from the atmosphere and build up soil organic carbon stocks while producing biomass which can be used to generate energy services.

The aim of this thesis was to assess the climate impact of bioenergy systems and develop the methodology used to evaluate these systems. The biomass from a SRC willow plantation can be used in a number of different ways to produce energy services. Specific objectives of this thesis were to investigate the energy efficiency and time-dependent climate impact of SRC willow–based bioenergy systems using different ways of converting the biomass into electricity and heat.

Life cycle assessment (LCA) methodology was used to enable the assessment of time-dependent climate impacts using a time-distributed inventory and a time-dependent indicator, i.e. the global mean surface temperature change (∆Ts). Several different ways of generating electricity and/or heat from the biomass produced at a SRC willow plantation were compared, taking biogenic C stock changes into account.

The main conclusions were that SRC willow–based bioenergy systems can be truly C negative and help contribute to counteract the current trend in global warming while delivering renewable energy at the same time. The choice of energy conversion technology affects both the energy efficiency and the potential climate impact mitigation potential of the system. Biogenic C pools can have a very large influence on the climate impact in bioenergy systems. It is therefore important to take these pools into account whenever land use or management changes take place, in order to counteract global warming more effectively.

Authors/Creators:Ericsson, Niclas
Title:Time-dependent climate impact of short rotation coppice willow–based systems for electricity and heat production
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :September 2015
Depositing date:7 September 2015
Volume:2015:96
Number of Pages:91
Papers/manuscripts:
NumberReferences
IEricsson, N., Porsö, C., Ahlgren, S., Nordberg, Å., Sundberg, C. and Hansson, P.-A. (2013). Time-dependent climate impact of a bioenergy system – methodology development and application to Swedish conditions. GCB Bioenergy 5(5), 580–590.
IIHammar, T., Ericsson, N., Sundberg, C. and Hansson, P.-A. (2014). Climate impact of willow grown for bioenergy in Sweden. BioEnergy Research 7(4), 1529–1540.
IIIEricsson, N., Nordberg, Å., Sundberg, C., Ahlgren, S. and Hansson, P.-A. (2014). Climate impact and energy efficiency from electricity generation through anaerobic digestion or direct combustion of short rotation coppice willow. Applied Energy 132, 86–98.
IVEricsson, N., Sundberg, C., Nordberg, Å., Ahlgren, S. and Hansson, P.-A. (2015) Time-dependent climate impact and energy efficiency of combined heat and power production from short rotation coppice willow using pyrolysis or direct combustion (manuscript).
Place of Publication:Uppsala
Publisher:Department of Energy and Technology, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-8390-8
ISBN for electronic version:978-91-576-8391-5
ISSN:1652-6880
Language:English
Additional Information:Funded by: STandUP for Energy, a collaboration initiative between Uppsala University, The Royal Institute of Technology, The SwedishUniversity of Agricultural Sciences and LuleåUniversity of Technology.
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:P Natural resources > P06 Renewable energy resources
T Pollution > T01 Pollution
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 105 Earth and Related Environmental Sciences > Environmental Sciences (social aspects to be 507)
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Renewable Bioenergy Research
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 405 Other Agricultural Sciences > Environmental Sciences related to Agriculture and Land-use
Agrovoc terms:salix, coppice system, biomass, energy generation, heating, electricity, global warming, climatic change, time, life cycle analysis, carbon dioxide, environmental impact assessment
Keywords:Life cycle assessment, LCA, climate impact, time-dependency, system dynamics, Salix, bioenergy, biochar, biogas
URN:NBN:urn:nbn:se:slu:epsilon-e-2908
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-2908
ID Code:12584
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Energy and Technology
Deposited By: Niclas Ericsson
Deposited On:07 Sep 2015 13:01
Metadata Last Modified:17 Feb 2016 09:58

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