Emissions from soy biodiesel blends: A single particle perspective

Dabrina D. Dutcher, Joakim Pagels, Anil Bika, Luke Franklin, Mark Stolzenburg, Samantha Thompson, Juan Medrano, Nicholas Brown, Deborah S. Gross, David Kittelson, Peter H. McMurry

Research output: Contribution to journalArticlepeer-review


Biodiesel has recently reemerged as a common fuel. However, emissions from biodiesel combustion have been studied in much less detail than those from traditional petroleum-based diesel. In this experiment, emissions from the combustion of different fuel blends (BOO, B02, B20, B99, where the number after B indicates the percentage, by volume, of biodiesel in the fuel) in a VW TDi engine were analyzed by aerosol time-of-flight mass spectrometers (ATOFMS) for single-particle composition and vacuum aerodynamic size. The ATOFMS results show that the PAH molecular weight distribution is not significantly affected by the fuel composition, and that sulfates are reduced by increased biodiesel content. Octanedioic acid (a carbonyl species) is increased with increased biodiesel concentration. Clustering results from the single-particle spectra show that the particles fall in five main types by chemical composition. The aerodynamic size distribution of these individual clusters was also determined. These results also show that methods used to identify diesel particle emissions for source apportionment are not applicable when significant concentrations of biodiesel are used in fuels. (C) 2011 Elsevier Ltd. All rights reserved.
Original languageEnglish
Pages (from-to)3406-3413
JournalAtmospheric Environment
Issue number20
Publication statusPublished - 2011

Subject classification (UKÄ)

  • Meteorology and Atmospheric Sciences

Free keywords

  • Biodiesel
  • Aerosol


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