Influence of the aerosol flow and exposure time on the structural changes in the filtering half masks material

Negovan Ivanković, Dušan Rajić, Radovan Karkalić, Dušan Janković, Željko Radovanović, Stevan Stupar, Darko Janković

Abstract


The flow of air and aerosol particles through the filtering half masks material depends on the structure porosity. It is very difficult to determine the behaviour of the filtering material during the process of extraction and ret­ention of aerosols. The samples of five filtering half mask models were used in this investigation. Dynamics of the aerosol filtration through the filtering mat­erials was tested using a method for testing the leakage of aerosol particles through the filtering material and a method for testing the inhalation resistance of filtering material, both specified in the SRPS EN 149:2013. Recording of the structural changes in the samples of the tested materials was carried out by the technique of scanning electron microscopy. The experiments showed a devi­ation of the results in relation to the theory of filtration the finely dispersed submicron sized particles. It was concluded that the aerosol leakage through the filtering half masks and their resistance to aerosol flow change depend on the aerosol flow rates and the on filtration process duration, as a direct con­se­quence of the newly-made changes in the structure of the filtering material and due to reversibility effect between the filtration process and the changes in the filtering material.


Keywords


filtration dynamics; structure porosity; fiber properties; scanning electronic microscopy

References


D. Bell, A. Nicoll, K. Fukuda, Emerg. Infect. Dis. 12 (2006) 88

World Health Organization, WHO global influenza preparedness plan: the role of WHO and recommendations for national measures before and during pandemics (2005). Annex 1. Recommendations for nonpharmaceutical public health interventions

Center for Disease Control and Prevention, Guidelines for Preventing the Transmission of Mycobacterium tuberculosis in Health-Care Settings, 2005. MMWR 2005; 54 (No. RR-17)

L. Y. Pei, Z. C. Gao, Z. Yang, D. G. Wei, S. X. Wang, J. M. Ji, B. G. Jiang, Beijing Da Xue Xue Bao 38 (2006) 271

D. Rajic, Z. Kamberovic, B. Zakula, Creative Engineering, Innovation Centre of the Faculty of Technology and Metallurgy, Belgrade, 2016

D. Rajic, Creative Ecology, Copyright edition, Belgrade, 2016

A. Frenot, I. S. Chronakis, Curr. Opin. Colloid Interface Sci. 8 (2003) 64

K. Kosmider, J. Scott, Filtr. Sep. 39 (2002) 20

R.S. Barhate, S. Ramakrishna, J. Membr. Sci. 296 (2007) 1

А. Podgorski, А. Balazy, L. Gradon, Chem. Eng. Sci. 61 (2006) 6804

T. Sparks, G. Chase, Filters and Filtration Handbook, 6th ed., Butterworth-Heinemann, Oxford, 2016

T. D. Show, Fundamentals of Aeroсol Science, John Wiley and Sons, New York, 1978

R. C. Brown, Air filtration, an integrated approach to the theory and application of fibrous filters, Pergamon Press, Oxford, 1993

W. C. Hinds, Aerosol Technology. Properties, Behavior, and Measurement of Airborne Particles, John Wiley and Sons, Toronto, 1982

C. C. Chen, M. Lehtimaki, K. Willeke, Am. Indust. Hyg. Assoc. J. 53 (1992) 566

L. Janssen, Occup. Health Saf. 72 (2003) 73

L. M. Brosseau, N. V. McCullough, D. Vesley, Appl. Occup. Environ. Hyg. 12 (1997) 435

N. V. McCullough, L. M. Brosseau, D. Vesley, Ann. Occup. Hyg. 41 (1997) 677

SRPS EN 149: Respiratory protective devices – Filtering half masks to protect against particles - Requirements, testing, marking, 2013.




DOI: https://doi.org/10.2298/JSC170624004I

Copyright (c) 2018 J. Serb. Chem. Soc.

Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

IMPACT FACTOR 0.797 (139 of 171 journals)
5 Year Impact Factor 0,923 (134 of 171 journals)