Journal: Journal of Aerosol Science

Abbreviation

J. Aerosol Sci.

Publisher

Elsevier

Journal Volumes

ISSN

0021-8502
1879-1964

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Publications 1 - 10 of 55
  • Coagulation of Symmetric and Asymmetric Bipolar Aerosols
    Item type: Journal Article
    Vemury, Srinivas; Jansen, Christian; Pratsinis, Sotiris E. (1997)
    Journal of Aerosol Science
  • Simulation of Synthesis of Pd Nanoparticles in a Jet Aerosol Flow Condenser
    Item type: Journal Article
    Tsantilis, S.; Pratsinis, Sotiris E.; Haas, V. (1999)
    Journal of Aerosol Science
  • Particulate emissions from turbulent diffusion flames with entrained droplets: A laboratory simulation of gas flaring emissions
    Item type: Journal Article
    Kazemimanesh, Mohsen; Baldelli, Alberto; Trivanovic, Una; et al. (2021)
    Journal of Aerosol Science
    Global flaring volume exceeds 140 billion m3 annually and flares are a key source of particulate air pollution. During flowback operations subsequent to fracturing of a well, droplets of flowback water-with varying levels of dissolved salts-can be entrained in the flared gas. Despite the widespread prevalence of fracturing, very little is known about the properties of particle emissions from such flares. To study these properties, we used a laboratory pipe flare producing a turbulent diffusion flame without and with entrained droplets. Entrained droplets of deionized water, sodium chloride solution, and solutions representing two typical flowback waters in Canada (Cardium and Duvernay) were used. Three different gas compositions (consisting of C1 to C7 alkanes, carbon dioxide, and nitrogen) representative of flares in the upstream oil and gas sector in Alberta, Canada were studied. The results showed that the salt in the entrained flowback droplets increased the particle concentration by about one order of magnitude by forming freshly nucleated salt particles. Moreover, soot concentration increased as a result of entrained salt. Effective density results showed that small particles (<150 nm mobility diameter) were mainly salt, while large particles (>300 nm) were mostly soot-a result also confirmed by transmission electron microscopy (TEM). Electron micrographs showed that the majority of particles were either individual salt particles or internally-mixed soot-salt particles. The inorganic salt particles mainly consisted of Na and Cl, the two most abundant elements in flowback water. Raman spectroscopy indicated that the salt had much less (or no) impact on graphitic nanostructure of soot, while the fuel blend had a significant effect. The results of this study are significant as they reveal that current emission inventories based on flaring of gases only may underestimate soot emissions from flares with entrained droplets.
  • Gas Phase Production of Particles in Reactive Turbulent Flows
    Item type: Journal Article
    Xiong, Y.; Pratsinis, Sotiris E. (1991)
    Journal of Aerosol Science
  • On-line monitoring of primary and agglomerate particle dynamics
    Item type: Journal Article
    Gröhn, A.J.; Eggersdorfer, M.L.; Pratsinis, Sotiris E.; et al. (2014)
    Journal of Aerosol Science
  • Narrowing the size distribution of aerosol made titania by surface growth and coagulation
    Item type: Journal Article
    Tsantilis, Stavros; Pratsinis, Sotiris E. (2004)
    Journal of Aerosol Science
  • Multi-frequency photothermal interferometry of single aerosol particles
    Item type: Journal Article
    Stollberger, Felix W.; Gleichweit, Michael; Signorell, Ruth; et al. (2025)
    Journal of Aerosol Science
    The frequency dependence of photothermal and photoacoustic signals provides information on evaporation, condensation, and heat transfer processes in aerosol particles. Performing such measurements at the single particle level increases accuracy and provides access to various particle properties. Previously, this was not possible due to the resonant acoustic signal amplification required in photoacoustics, which restricted usable modulation frequencies to a single value. In this study, we introduce the use of multi-frequency photothermal interferometry (nω-PTI) on single, optically trapped particles and experimentally investigate the frequency dependence of the photothermal signal. The observed signal and its dependence on the optical and thermophysical properties of the particle and the interferometer probe beam are analyzed by an accompanying theoretical model. Our measurements prove the applicability of the presented method and indicate a stronger frequency dependence of the photothermal amplitude from single particles than previously observed in bulk measurements. Furthermore, we were able to decouple the contributions from the particle temperature and the thermal wave propagation and examine their frequency dependencies individually. Finally, we analyzed the direct influence of the particle on the measured signal and showed the potential of frequency-resolved photothermal measurements to study thermophysical parameters or optical properties at the single particle level in the Knudsen transition regime.
  • Effective density and mass-mobility exponents of particulate matter in aircraft turbine exhaust: dependence on engine thrust and particle size
    Item type: Journal Article
    Abegglen, M.; Durdina, L.; Brem, B.; et al. (2015)
    Journal of Aerosol Science
  • Continuous flame aerosol synthesis of carbon-coated nano-LiFePO4 for Li-ion batteries
    Item type: Journal Article
    Waser, Oliver; Büchel, Robert; Hintennach, Andreas; et al. (2011)
    Journal of Aerosol Science
  • Self-Preserving Size Distributions of Agglomerates
    Item type: Journal Article
    Vemury, Srinivas; Pratsinis, Sotiris E. (1995)
    Journal of Aerosol Science
Publications 1 - 10 of 55