Kinetic Double-layer Modelling of Aerosol Surface and Bulk Chemistry
Tongxuan Ren
GS.CMA.G O V. C N
DOI: https://doi.org/10.59429/pest.v5i4.795
Keywords: Kinetic Double-Layer Model; Oleic Acid; Aerosol
Abstract
This paper focuses on the kinetic double-layer model (K2-SUB). It has been established that models clearly resolve the mass transfer and chemical reactions at the surface and inside most aerosol particles. The K2-SUB is applied to the atmospheric heterogeneous chemical model system: the interaction of ozone and oleic acid. It can be used to model volatile and non-volatile substances at the gas-particle interface and inside the particle, time and concentration distribution, as well as surface concentration and gas absorption coefficient. Modelling the reaction of oleic acid particles- a proxy system for kitchen exhaust gas- with the atmospheric oxidant ozone (O3) provides evidence that when the particle size of oleic acid gradually increases, the decay time of oleic acid in ozone is longer. K2-SUB is less sensitive to the surface reaction rate coefficient and the bulk reaction rate coefficient but is sensitive to the bulk diffusion coefficient of ozone and initial surface accommodation coefficient of ozone.
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