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What are the driving factors influencing the size distribution of airborne synthetic clay particles emitted from a jet milling process?

Citation

Faghihi, EM and Martin, D and Salimi, F and Edwards, G and He, C and Morawska, L, What are the driving factors influencing the size distribution of airborne synthetic clay particles emitted from a jet milling process?, Aerosol and Air Quality Research, 16, (1) pp. 25-35. ISSN 1680-8584 (2016) [Refereed Article]


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Copyright Statement

© Taiwan Association for Aerosol Research

DOI: doi:10.4209/aaqr.2015.03.0170

Abstract

In the field of workplace air quality, measuring and analyzing the size distribution of airborne particles to identify their sources and apportion their contribution has become widely accepted, however, the driving factors that influence this parameter, particularly for nanoparticles (< 100 nm), have not been thoroughly determined. Identification of driving factors, and in turn, general trends in size distribution of emitted particles would facilitate the prediction of nanoparticles’ emission behavior and significantly contribute to their exposure assessment. In this study, a comprehensive analysis of the particle number size distribution data, with a particular focus on the ultrafine size range of synthetic clay particles emitted from a jet milling machine was conducted using the multi-lognormal fitting method. The results showed relatively high contribution of nanoparticles to the emissions in many of the tested cases, and also, that both surface treatment and feed rate of the machine are significant factors influencing the size distribution of the emitted particles of this size. In particular, applying surface treatments and increasing the machine feed rate have the similar effect of reducing the size of the particles, however, no general trend was found in variations of size distribution across different surface treatments and feed rates. The findings of our study demonstrate that for this process and other activities, where no general trend is found in the size distribution of the emitted airborne particles due to dissimilar effects of the driving factors, each case must be treated separately in terms of workplace exposure assessment and regulations.

Item Details

Item Type:Refereed Article
Keywords:Airborne particle emission, Size distribution, Workplace aerosol measurement
Research Division:Earth Sciences
Research Group:Atmospheric Sciences
Research Field:Atmospheric Aerosols
Objective Division:Environment
Objective Group:Atmosphere and Weather
Objective Field:Atmospheric Processes and Dynamics
Author:Salimi, F (Dr Farhad Salimi)
ID Code:108235
Year Published:2016
Web of Science® Times Cited:1
Deposited By:Menzies Institute for Medical Research
Deposited On:2016-04-14
Last Modified:2017-01-23
Downloads:0

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