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

Faghihi, Ehsan Majd, Martin, Darren, Salimi, Farhad, Edwards, Grant, He, Congrong and Morawska, Lidia (2016) 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: 25-35. doi:10.4209/aaqr.2015.03.0170


Author Faghihi, Ehsan Majd
Martin, Darren
Salimi, Farhad
Edwards, Grant
He, Congrong
Morawska, Lidia
Title What are the driving factors influencing the size distribution of airborne synthetic clay particles emitted from a jet milling process?
Journal name Aerosol and Air Quality Research   Check publisher's open access policy
ISSN 2071-1409
1680-8584
Publication date 2016-01-01
Sub-type Article (original research)
DOI 10.4209/aaqr.2015.03.0170
Volume 16
Issue 1
Start page 25
End page 35
Total pages 11
Place of publication Taiwan, Republic of China
Publisher Chinese Association for Aerosol Research in Taiwan
Collection year 2017
Language eng
Formatted 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.
Keyword Airborne particle emission
Size distribution
Workplace aerosol measurement
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: HERDC Pre-Audit
Australian Institute for Bioengineering and Nanotechnology Publications
 
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