Analysis of the global warming potential of biogenic CO₂ emission in life cycle assessments

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dc.contributor.authorLiu, Weiguoen_ZA
dc.contributor.authorZhang, Zhonghuien_ZA
dc.contributor.authorXie, Xinfengen_ZA
dc.contributor.authorYu, Zhenen_ZA
dc.contributor.authorVon Gadow, Klausen_ZA
dc.contributor.authorXu, Junmingen_ZA
dc.contributor.authorZhao, Shanshanen_ZA
dc.contributor.authorYang, Yuchunen_ZA
dc.date.accessioned2018-11-29T06:45:12Z
dc.date.available2018-11-29T06:45:12Z
dc.date.issued2017-01-03
dc.descriptionCITATION: Liu, W., et al. 2017. Analysis of the Global Warming Potential of Biogenic CO₂ Emission in Life Cycle Assessments. Scientific Reports, 7:39857, doi:10.1038/srep39857.en_ZA
dc.descriptionThe original publication is available at https://www.nature.comen_ZA
dc.description.abstractBiomass is generally believed to be carbon neutral. However, recent studies have challenged the carbon neutrality hypothesis by introducing metric indicators to assess the global warming potential of biogenic CO2 (GWPbio). In this study we calculated the GWPbio factors using a forest growth model and radiative forcing effects with a time horizon of 100 years and applied the factors to five life cycle assessment (LCA) case studies of bioproducts. The forest carbon change was also accounted for in the LCA studies. GWPbio factors ranged from 0.13–0.32, indicating that biomass could be an attractive energy resource when compared with fossil fuels. As expected, short rotation and fast-growing biomass plantations produced low GWPbio. Long-lived wood products also allowed more regrowth of biomass to be accounted as absorption of the CO2 emission from biomass combustion. The LCA case studies showed that the total life cycle GHG emissions were closely related to GWPbio and energy conversion efficiency. By considering the GWPbio factors and the forest carbon change, the production of ethanol and bio-power appeared to have higher GHG emissions than petroleum-derived diesel at the highest GWPbio.en_ZA
dc.description.urihttps://www.nature.com/articles/srep39857
dc.description.versionPublisher's versionen_ZA
dc.format.extent8 pages : illustrationsen_ZA
dc.identifier.citationLiu, W., et al. 2017. Analysis of the Global Warming Potential of Biogenic CO₂ Emission in Life Cycle Assessments. Scientific Reports, 7:39857, doi:10.1038/srep39857en_ZA
dc.identifier.issn2045-2322 (Online)
dc.identifier.otherdoi:10.1038/srep39857
dc.identifier.urihttp://hdl.handle.net/10019.1/104747
dc.language.isoen_ZAen_ZA
dc.publisherNature Researchen_ZA
dc.rights.holderAuthors retain copyrighten_ZA
dc.subjectGlobal warmingen_ZA
dc.subjectGlobal warming potentialen_ZA
dc.subjectBiogenic CO₂en_ZA
dc.titleAnalysis of the global warming potential of biogenic CO₂ emission in life cycle assessmentsen_ZA
dc.typeArticleen_ZA
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