Publications and presentations

Peer review journals
Ericsson, N., Sundberg, C., Nordberg, Å., Ahlgren, S., Hansson, P.A. 2016. Time-dependent climate impact and energy efficiency of combined heat and power production from short rotation coppice willow using pyrolysis or direct combustion. GCB Bioenergy. In press.

Karlsson, H., Ahlgren, S., Sandgren, M., Passoth, V., Wallberg, O., Hansson, P.-A. 2016. A systems analysis of biodiesel production from wheat straw using oleaginous yeast: process design, mass and energy balances. Biotechnology for Biofuels, 9(1), 229.

Moghaddam, E.A., Ahlgren, S., Nordberg, Å. 2016. Assessment of Novel Routes of Biomethane Utilization in a Life Cycle Perspective. Frontiers in Bioengineering and Biotechnology, 4(89).


Karlsson, H., Ahlgren, S., Strid, I., Hansson, P.-A. 2015. Faba beans for biorefinery feedstock or feed? Greenhouse gas and energy balances of different applications. Agricultural Systems, 141, 138-148.

Ortiz, C., Hammar, T., Ahlgren, S., Hansson, P.-A., Stendahl, J. 2016. Time-dependent global warming impact of tree stump bioenergy in Sweden, Forest Ecology and Management, Available online http://dx.doi.org/10.1016/j.foreco.2016.02.014

Ahlgren, S., A. Björklund, A. Ekman, H. Karlsson, J. Berlin, P. Börjesson, T. Ekvall, G. Finnveden, M. Janssen, Strid, I. 2015. Review of methodological choices in LCA of biorefinery systems - key issues and recommendations. Biofuels, Bioproducts and Biorefining, 9(5), 606-619. http://dx.doi.org/10.1002/bbb.1563

Ahmadi Moghaddam, E., Ahlgren, S., Hulteberg, C., Nordberg, Å. 2015. Energy balance and global warming potential of biogas-based fuels from a life cycle perspective. Fuel Processing Technology, 132(0), 74-82.

Tallaksen, J., Bauer, F., Hulteberg, C., Reese, M, Ahlgren, S., 2015. Nitrogen fertilizers manufactured using wind power: greenhouse gas and energy balance of community-scale ammonia production. Journal of Cleaner Production, 107, 626-635.

Ahlgren, S., and Di Lucia, L. 2014. Indirect land use changes of biofuel production - A review of modelling efforts and policy developments in the EU. Biotechnology for Biofuels 7 (35), 1-10. 

Eriksson, N., Nordberg, Å., Sundberg, C., Ahlgren, S., 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(0), 86-98. 

Karlsson, H., Börjesson, P. Hansson, P.-A. Ahlgren, S. 2014. Ethanol production in biorefineries using lignocellulosic feedstock – GHG performance, energy balance and implications of life cycle calculation methodology. Journal of Cleaner Production 83 (0), 420-427.

Tunå, P., Hulteberg, C., Ahlgren, S. 2013. Techno-economic assessment of nonfossil ammonia production. Environmental Progress & Sustainable Energy 33 (4) 1290-1297.

Ericsson N, Porsö C, Ahlgren S, Nordberg Å, Sundberg C , Hansson P-A (2013). Time-dependent climate impact of a bioenergy system – methodology development and application to Swedish conditions. GCB Bioenergy http://dx.doi.org/10.1111/gcbb.12031

Ahlgren, S., Baky, A., Bernesson, S., Nordberg,Å., Norén, O., Hansson, P.-A. 20142 Consequential Life Cycle Assessment of Nitrogen Fertilisers Based on Biomass – a Swedish perspective. Insciences Climate Change Journal 2012, 2(4). http://dx.doi.org/10.5640/insc.020480

Berndes G, Ahlgren S, Börjesson P , Cowie A L (2012). Bioenergy and land use change—state of the art. Wiley Interdisciplinary Reviews: Energy and Environment, Vol., pp n/a-n/a.http://onlinelibrary.wiley.com/doi/10.1002/wene.41/abstract

Ahlgren, S., Röös, E., Di Lucia, L., Sundberg, C., Hansson, P.-A. 2012. EU sustainability criteria for biofuels: uncertainties in GHG emissions from cultivation. Biofuels, 3(4), 399-411. http://dx.doi.org/10.4155/bfs.12.33

Börjesson, P., Ahlgren, S., Berndes, G. 2012. The climate benefit of Swedish ethanol: present and prospective performance. Wiley Interdisciplinary Reviews: Energy and Environment, 1(1), 81-97.http://dx.doi.org/10.1002/wene.17

Di Lucia, L., Ahlgren, S., Ericsson, K., 2012. The dilemma of indirect land-use changes in EU biofuel policy - An empirical study of policy-making in the context of scientific uncertainty. Environmental Science & Policy 16, 9-19.http://dx.doi.org/10.1016/j.envsci.2011.11.004

Ahlgren, S., Bernesson, S., Nordberg, A. & Hansson, P.-A., 2010. Nitrogen fertiliser production based on biogas - Energy input, environmental impact and land use. Bioresource Technology 101(18), 7192-7195. http://dx.doi.org/10.1016/j.biortech.2010.04.006

Ahlgren, S., Baky, A., Bernesson, S., Nordberg, Å., Norén, O. & Hansson, P.-A., 2009. Tractive power in organic farming based on fuel cell technology – Energy balance and environmental load. Agricultural Systems 102(1-3), 67-76. http://dx.doi.org/10.1016/j.agsy.2009.07.001 Open Access

Ahlgren, S., Baky, A., Bernesson, S., Nordberg, Å., Norén, O., Hansson, P.A., 2008. Future fuel supply systems for organic production based on Fischer-Tropsch diesel and dimethyl ether from on-farm-grown biomass. Biosystems Engineering, 99, 145-155. http://dx.doi.org/10.1016/j.biosystemseng.2007.09.011 Open Access

Ahlgren, S., Baky, A., Bernesson, S., Nordberg, Å., Norén, O., Hansson, P.-A. 2008. Ammonium nitrate fertiliser production based on biomass – environmental effects in a life cycle perspective. Bioresource Technology 99, 8034–8041 http://dx.doi.org/10.1016/j.biortech.2008.03.041 Open Access

Hansson, P.A., Baky, A., Ahlgren, S., Bernesson, S., Nordberg, A., Noren, O., Pettersson, O., 2007. Self-sufficiency of motor fuels on organic farms - Evaluation of systems based on fuels produced in industrial-scale plants. Agricultural Systems 94, 704 - 714. http://dx.doi.org/10.1016/j.agsy.2007.02.010 Open Access



Reports
Ahlgren, S. SUSTAINABILITY CRITERIA FOR BIOFUELS IN THE EUROPEAN UNION – A SWEDISH PERSPECTIVE. Report from an f3 synthesis project, 2012:1. pdf for download

Ahlgren, S., Baky, A., Bernesson, S.,  Nordberg, Å., Noren, O. Hansson, P.A., 2011. Green nitrogen­ - possibilities for production of mineral nitrogen fertilisers based on renewable resources in Sweden. Report 030. Dep of Energy and Technology, Swedish University of Agricultural Sciences. pdf for download

Ahlgren, S., Börjesson, P., 2011. Indirekt förändrad markanvändning och biodrivmedel - en kunskapsöversikt, Rapport 73. Juni 2011. Lunds universitet, Lunds Tekniska Högskola, avd för miljö-och energisystem.pdf for download

Hallström, E., Ahlgren, S., Börjesson, P., 2011. Challenges and opportunities for future production of food, feed and biofuel. A land use perspective, Report no 74. Avd för miljö- och energisystem, Lunds tekniska högskola.pdf for download

Ahlgren, S., Hansson, P.-A., Kimming, M., Aronsson, P., Lundkvist, H., 2011. Greenhouse gas emissions from cultivation of agricultural crops for biofuels and production of biogas from manure - Implementation of the Directive of the European Parliament and of the Council on the promotion of the use of energy from renewable sources. Revised edition according to new interpretations of the directive regarding reference land use and crop drying, Swedish University of Agricultural Sciences. http://ec.europa.eu/energy/renewables/transparency_platform/doc/article_19_2/19_2_sweden_en.pdf

Ahlgren, S., Baky, A., Bernesson, S., Hansson, P.A., Nordberg, Å. & Noren, O., 2010. Det svenska jordbrukets framtida drivmedelsförsörjning - Future Vehicle Fuel Supply for Swedish Agriculture. JTI-rapport Lantbruk & Industri nr 392, Uppsala. http://pub-epsilon.slu.se:8080/1684/01/ahlgren_s_et_al_100518.pdf

Popular science articles and presentations
Ahlgren, S. & Hansson, P-A. 2010. Jordbruk utan fossil energi. Kapitel i Jordbruk som håller i längden, Formas fokuserar. www.formasfokuserar.se

Ahlgren, S. & Jarvis, Å., 2010. Grödor kan odlas utan fossilt bränsle. Tidningen Energigas nr 1, 2010.

Ahlgren S., Baky A., Bernesson S., Hansson P-A., Nordberg Å., Norén O. 2007. Biodrivmedel för ekologiska gårdar Fakta Jordbruk vol Nr 14, 2006/2007 http://www-nlfak.slu.se/faktajordbruk/pdf06/Jo06-14.pdf

Presentation: Klarar Sverige EU:s mål för utsläpp av växthusgaser vid biodrivmedelsproduktion? Energidagen 5 Sept, 2009, Gustavianum, Uppsala universitet.

Presentation: Odling av majs och gräsvall till biogas. Energibalans och utsläpp av växthusgaser. Seminarium Majs till energi – nya möjligheter och utmaningar för lantbruket, 2 Sept, 2009, Jälla.

Presentation: Klimatsmarta energigrödor - och klimatsmart användning! Klimatkonventet i Västmanland, 3 Dec, 2009,Västerås.

Presentation: Environmental performance evaluation tools for bioenergy systems. Training course Renewable energy sources for Polish Niras. 25 May 2010, Stockholm.

Conferences
Ahlgren, S., Börjesson, P., 2011. Combining economic modelling and life cycle assessment – is it possible from a scientific method point of view?, Quantifying and managing land use effects of bioenergy. Jointly organized by: IEA Bioenergy Task 38, 40 and 43, 19-21 September 2011, Campinas, Brazil http://www.ieabioenergy-task38.org/Campinas_workshop_FINAL_program_30_8.pdf

Ahlgren, S., Bernesson, S., Baky, A., Nordberg, Å., Hansson, P.A., 2011. Mineral nitrogen fertilisers produced from biomass – technical solutions and emission reduction possibilities, 19th European Biomass Conference and Exhibition, 6-10 June, Berlin.

GHG calculations of biofuel crops and biogas production in Sweden for EU´s RES-directive. World Bioenergy Clean Vehicles and Fuels, 17 Dec, 2009, Stockholm

Ahlgren, S., Baky, A., Bernesson, S., Nordberg, Å., Norén, O., Hansson, P.-A. 2009. Mineral Nitrogen Fertilisers Based on Renewable Resources - Implications for Alternative Fuels. Proceedings in XXXIII CIOSTA - CIGR V Conference 2009, 17-19 June 2009, Reggio Calabria (Italy).

Ahlgren, S., Bernesson, S., Baky, A., Nordberg, Å., Norén, O., Hansson, P.A., 2007. Self-sufficiency of biofuels - costs for an organic farm in Sweden using FTD or DME. Proceedings in Bio€ - Success and Visions for Bioenergy, 22-23 March 2007, Salzburg.

Hansson, P.A., Baky, A., Ahlgren, S., Bernesson, S., Nordberg, Å., Noren, O., 2006. Perspectives for biofuel production and use in organic farming. ISOFAR satellite meeting, Odense, Danmark, 2006-06-01.

Hansson, P.-A., Ahlgren, S.,  Baky, A.,  Bernesson, S., Nordberg, Å., Norén, O. Hur kan det ekologiska lantbruket bli självförsörjande på biobaserade drivmedel? Proceedings in Ekologiskt lantbruk. 22-23 november 2005, Ultuna, Uppsala

Thesis
Ahlgren, 2009. Crop production without fossil fuel. Production systems for tractor fuel and mineral nitrogen based on biomass. Doctoral dissertation. Dept. of Energy and Technology, SLU. Acta Universitatis agriculturae Sueciae vol. 2009:78. http://pub.epsilon.slu.se/2151/

Ahlgren, S. 2004. Environmental impact of chemical and mechanical weed control in agriculture - a comparing study using Life Cycle Assessment (LCA) methodology. SIK-rapport nr 719 (Masters Thesis). http://www-mat21.slu.se/publikation/pdf/LCAogras.pdf