AAAR 34th Annual Conference
October 12 - October 16, 2015
Hyatt Regency
Minneapolis, Minnesota, USA
Abstract View
Combustion Process Apportionment of Carbonaceous Particulate Emission from a Diesel Fuel Burner
LAARNIE MÜLLER, Jürgen Schnelle-Kreis, Gert Jakobi, Lianpeng Jing, Jürgen Orasche, Francesco Canonaco, Andre Prévôt, Ralf Zimmermann, Helmholtz Zentrum München
Abstract Number: 710 Working Group: Combustion
Abstract Carbonaceous particulate matter from combustion processes are of current interest due to their environmental impacts and energy conservation implications. Carbonaceous particle emissions from combustion processes are being regulated mainly due to their potential health and climate effects. Combustion conditions impact the characteristics and temporal evolution of carbonaceous emissions [Mueller et al., 2015]. The formation of health-relevant compounds such as polycyclic aromatic hydrocarbons in a flame soot generator depended on the fuel-air equivalence ratio [Mueller et al., 2015]. In this study, with a mini diesel Combustion Aerosol STandard (mini diesel CAST 5201D, Jing CAST Ltd., Switzerland), different flame settings were applied to study the characteristics of resulting emitted carbonaceous particles. We investigated the emitted organic matter (OM), black carbon (BC), and brown carbon (BrC), exhaust gas, and physical properties produced from varying flowrates of oxidizing air and diesel fuel (DF) with and without additives (lubricant, Fe, Mn, S, and V) using the high resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS, Aerodyne Research Inc, USA), aethalometer (Magee Scientific, Slovenia), scanning mobility particle sizer (TSI, USA), aerodynamic particle sizer (APS, TSI, USA), and condensation particle counter (CPC, TSI, USA). The combustion processes were unmixed based on the high resolution mass spectra of OM ions by applying the SoFi program [Canonaco et al., 2013], a source apportionment tool using multilinear engine (ME-2).The separated factors differ in terms of OM:OC and O:C ratios, and temporal evolution. These observations will be correlated to the changes in the raw gas and optical properties from the aethalometer data to get a better picture of the combustion processes that occured