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Reduction of CO2-emissions by using biomass in combustion and digestion plants

Authors:	Gaston Hoffmann Daniel Schingnitz Antje Schnapke Bernd Bilitewski

Affiliation:	1. UPRES EA 1207, Laboratoire de Biologie des Ligneux et des Grandes Cultures, Université d''Orléans, Orléans, France;2. Unité de Recherche FRE 3498 CNRS, EDYSAN, Ecologie et Dynamique des Systèmes Anthropisés, Laboratoire de Bio-Ecologie des Insectes Phytophages et Entomophages, Université de Picardie Jules Verne, Amiens, France;3. INRA, UR0588 Amélioration, Génétique et Physiologie Forestières, Orléans, France;1. INRA, UMR 1137 Ecologie et Ecophysiologie Forestières, F-54280 Champenoux, France;2. Université de Lorraine, UMR 1137 Ecologie et Ecophysiologie Forestières, F-54500 Vand?uvre-lès-Nancy, France;3. Université d''Orléans, UFR-Faculté des Sciences, UPRES EA 1207 Laboratoire de Biologie des Ligneux et des Grandes Cultures, BP 6759, F-45067 Orléans, France;4. INRA, USC 1328 Arbres et Réponses aux Contraintes Hydriques et Environnementales, BP 6759, F-45067 Orléans, France;5. Université d''Orléans, IUFM Centre Val de Loire, F-36000 Châteauroux, France;6. INRA, UR 0588 Amélioration, Génétique et Physiologie Forestières, F-45075 Orléans, France;1. Department of Modern Physics, University of Science and Technology of China, Hefei, Anhui 230026, PR China;2. College of Physics and Electronic Information Engineering, Wenzhou University, Wenzhou, Zhejiang 325035, PR China;3. School of Science, Southwest University of Science and Technology, Mianyang, Sichuan 621010, PR China;1. Institute of Soil Biology, Na Sádkach 7, 370 05, ?eské Budějovice, Czech Republic;2. Institute for Environmental Studies, Faculty of Science, Charles University in Prague, Benátská 2, 128 44, Prague 2, Czech Republic;3. Department of Ecology, Faculty of Science, Charles University in Prague, Vini?ná 7, 128 44, Prague 2, Czech Republic;4. Department of Mycology, Crop Research Institute, Drnovská 507, 161 06, Prague 6–Ruzyně, Czech Republic;5. Department of Ecotoxicology, Crop Research Institute, ?ernovická 4987, 430 01, Chomutov, Czech Republic;6. CZ Biom, Pod Vě?í 2, 169 00, Prague 6, Czech Republic;1. Energy Engineering, Division of Energy Science, Luleå University of Technology, SE-971 87 Luleå, Sweden;2. Energy Technology Centre in Piteå, Box 726, SE-941 28 Piteå, Sweden;1. School of Mechanical Engineering, Universiti Sains Malaysia, Engineering Campus, Nibong Tebal 14300, Penang, Malaysia;2. Mechanical Engineering Department, State University of Medan, Medan 20221, North Sumatera, Indonesia

Abstract:	Climate protection is one of the main aims of environmental policy. One way to advance and push the progress is to reduce the use of fossil fuels for energy production through an increasing production of renewable and CO₂-neutral energy for example through application of biomass. This paper sets the focus on biomass streams that can be used both thermal and biological for energy production like grass or energy crops. To calculate the potentials of decrease of CO₂-emissions for treatment of biomass in either combustion or digestion plants some scenarios were set up with different assumptions regarding degree of efficiency of treatment plants which depends on size of plants and the treatment process itself. The energetic utilisation of the considered biomass streams is divided in different utilisation scenarios: combined heat and power generation (CHP) and heat generation or power generation only. Additionally four groups of plant sizes referring to electrical power (from 0.1 up to 10.0 MW) were taken into consideration. The calculations of potential savings of CO₂-emission in both types of treatment scenarios lead to the result that in comparison to biological technologies thermal processes show a much higher utilisation of the energy content in biomass.

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