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Short-term evaporation of semi-volatile N-alkane aerosol particles: Experimental and computational approach.
Environ. Eng. Manag. J. 13, 1775-1785 (2014)
The process of semi-volatile aerosol particle evaporation was studied with respect to both computational and experimental approaches. A Sinclair-La Mer type aerosol generator was used to produce monodisperse particles from four n-alkanes (tetradecane, hexadecane, octadecane, eicosane) while particle sizing and FID measurements were applied to quantify particle- and vapor mass and their subsequent phase distribution. Aerosol dilution and later stationary analyses in a flow tube at two time intervals enabled an experimental study on particle evaporation into a finite and constant volume. Experiments carried out for n-alkanes at 25 degrees C showed that tetradecane particles evaporated almost completely within 3 seconds whereas eicosane particles remained nearly unchanged. A diffusion based model that accounts for the evaporation dynamic of variously concentrated particle populations was developed. Good agreement between experimental and computational results was found, with relative deviations being less than 20% for the majority of the experiments. The study has shown that evaporation of semi-volatile n-alkane aerosol particles can be successfully predicted using the diffusion based model.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Evaporation ; Mass Concentration ; Mixed Phase Aerosol ; Particle Size Distribution ; Semi-volatiles
ISSN (print) / ISBN
1582-9596
Quellenangaben
Volume: 13,
Issue: 7,
Pages: 1775-1785
Publisher
Institutul Politehnic din Iasi
Non-patent literature
Publications
Reviewing status
Peer reviewed