Biodiesel Fuel Property Effects on Particulate Matter Reactivity

Research output: Contribution to conferencePaper


Controlling diesel particulate emissions to meet the 2007 U.S. standard requires the use of a diesel particulate filter (DPF). The reactivity of soot, or the carbon fraction of particulate matter, in the DPF and the kinetics of soot oxidation are important in achieving better control of aftertreatment devices. Studies showed that biodiesel in the fuel can increase soot reactivity. This study therefore investigated which biodiesel fuel properties impact reactivity. Three fuel properties of interest included fuel oxygen content and functionality, fuel aromatic content, and the presence of alkali metals. To determine fuel effects on soot reactivity, the performance of a catalyzed DPF was measured with different test fuels through engine testing and thermo-gravimetric analysis. Results showed no dependence on the aromatic content or the presence of alkali metals in the fuel. The presence and form of fuel oxygen was the dominant contributor to faster DPF regeneration times and soot reactivity.
Original languageAmerican English
Number of pages12
StatePublished - 2010
Event6th International Exhaust Gas and Particulate Emissions Forum - Ludwigsburg, Germany
Duration: 9 Mar 201010 Mar 2010


Conference6th International Exhaust Gas and Particulate Emissions Forum
CityLudwigsburg, Germany

NREL Publication Number

  • NREL/CP-540-47286


  • biodiesel
  • diesel fuels
  • diesel particulate filters
  • DPF
  • particulate matter (PM)
  • soot reactivity


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