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EU sustainability criteria for biofuels: Uncertainties in GHG emissions from cultivation
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2012 (English)In: Biofuels, ISSN 1759-7269, E-ISSN 1759-7277, Vol. 3, no 4, p. 399-411Article in journal (Refereed) Published
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Abstract [en]

Background: Cultivation of raw material represents a large proportion of biofuelś GHG emissions. The EU renewable energy directive 2009/28/EC specifies a GHG emission default value for cultivation of biofuel raw material (23 g CO2-e/MJ ethanol for wheat). The aim of this study was to quantify the uncertainty in GHG emissions for wheat cultivation in Sweden, considering uncertainty and variability in data at farm level. Results: Two levels of data collection at farm level were analyzed; simple (only yield and amount of N) and advanced (also including amounts and types of energy). The 2.5-97.5 percentile uncertainty for Swedish winter wheat was 20-27 g CO 2-e/MJ, which can be considered large in the context of the Directives threshold of 23 g (to two significant figures). Conclusion: It is concluded that quantifying GHG emissions in order to regulate biofuels is a difficult task, especially emissions from cultivation, since these are biological systems with large variability.

Place, publisher, year, edition, pages
2012. Vol. 3, no 4, p. 399-411
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Renewable Bioenergy Research
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URN: urn:nbn:se:kth:diva-187968DOI: 10.4155/bfs.12.33Scopus ID: 2-s2.0-84864243618OAI: oai:DiVA.org:kth-187968DiVA, id: diva2:947499
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QC 20160708

Available from: 2016-07-08 Created: 2016-06-02 Last updated: 2018-01-10Bibliographically approved

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Sundberg, Cecilia

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