Composite fibrous filters for nano-aerosol filtration: Pressure drop and efficiency model

•Pressure drop and efficiency model for nano-aerosol filtration by fibrous filters.•Good agreement between this model and the experiments.•Model extended to dual-layer fibrous filters. A model was developed to predict the behavior of non-woven filters clogged during the filtration of nanostructured...

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Bibliographic Details
Published in:Separation and purification technology 2019-05, Vol.215, p.557-564
Main Authors: Thomas, D., Pacault, S., Charvet, A., Bardin-Monnier, N., Appert-Collin, J.-C.
Format: Article
Language:English
Subjects:
Chemical and Process Engineering
Chemical engineering
Chemical Sciences
Clogging
Composite fibrous filters
Efficiency
Engineering Sciences
Fibrous filters
Modeling
Nanoparticle
Pressure drop
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Summary:•Pressure drop and efficiency model for nano-aerosol filtration by fibrous filters.•Good agreement between this model and the experiments.•Model extended to dual-layer fibrous filters. A model was developed to predict the behavior of non-woven filters clogged during the filtration of nanostructured particles (i.e. agglomerates of nanometric particles). It estimates the evolution of the pressure drop and the collection efficiency during particle loading. It takes into account the filter characteristics (thickness, packing density, Davies diameter and mean fiber diameter), the particle-size distribution and the operating conditions (filtration velocity, temperature…). Only one adjustable parameter (βO) is needed, which ranges from 0.7 to 1 times the ratio of the mean fiber diameter and the Davies’ diameter of the clean filter. In comparison with experimental data, the model allows satisfactorily predicting the performances (pressure drop and efficiency) of several mono or dual layer fibrous filters during particle loading.
ISSN:1383-5866
1873-3794
DOI:10.1016/j.seppur.2019.01.043