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Limits to biofuels
Uppsala University, Disciplinary Domain of Science and Technology, Earth Sciences, Department of Earth Sciences, Global Energy Systems.
2013 (English)In: New Strategies for Energy Generation, Conversion and Storage, 2013, 01014- p.Conference paper, Published paper (Refereed)
Abstract [en]

Biofuel production is dependent upon agriculture and forestry systems, and the expectations of future biofuel potential are high. A study of the global food production and biofuel production from edible crops implies that biofuel produced from edible parts of crops lead to a global deficit of food. This is rather well known, which is why there is a strong urge to develop biofuel systems that make use of residues or products from forest to eliminate competition with food production. However, biofuel from agro-residues still depend upon the crop production system, and there are many parameters to deal with in order to investigate the sustainability of biofuel production. There is a theoretical limit to how much biofuel can be achieved globally from agro-residues and this amounts to approximately one third of todays' use of fossil fuels in the transport sector. In reality this theoretical potential may be eliminated by the energy use in the biomass-conversion technologies and production systems, depending on what type of assessment method is used. By surveying existing studies on biofuel conversion the theoretical limit of biofuels from 2010 years' agricultural production was found to be either non-existent due to energy consumption in the conversion process, or up to 2-6000 TWh (biogas from residues and waste and ethanol from woody biomass) in the more optimistic cases.

Place, publisher, year, edition, pages
2013. 01014- p.
Series
EPJ Web of Conferences, ISSN 2100-014X ; 54
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-213883DOI: 10.1051/epjconf/20135401014ISI: 000327057100014ISBN: 978-88-7438-079-4 (print)OAI: oai:DiVA.org:uu-213883DiVA: diva2:683609
Conference
Conference on New Strategies for Energy Generation, Conversion and Storage, JUL 30-AUG 04, 2012, Varenna, ITALY
Available from: 2014-01-05 Created: 2014-01-05 Last updated: 2014-01-05Bibliographically approved

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