scholarly journals 3D Air Filtration Modeling for Nanofiber Based Filters in the Ultrafine Particle Size Range

2011 ◽  
Author(s):  
Wannes Sambaer ◽  
Martin Zatloukal ◽  
Dusan Kimmer ◽  
Martin Zatloukal
Keyword(s):  
Particle Size ◽  
Size Range ◽  
Ultrafine Particle ◽  
Air Filtration ◽  
Particle Size Range ◽  
Filtration Modeling

scholarly journals Effect of electronic cigarette (EC) aerosols on particle size distribution in indoor air and in a radon chamber

Nukleonika ◽  
2019 ◽  
Vol 64 (1) ◽  
pp. 31-38 ◽  
Author(s):  
Hyam Nazmy Khalaf ◽  
Mostafa Y. A. Mostafa ◽  
Michael Zhukovsky
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Indoor Air ◽  
Size Range ◽  
Aerosol Particles ◽  
Ultrafine Particle ◽  
Decay Product ◽  
Electronic Cigarette ◽  
Particle Size Range

Abstract Particle size distribution is an important factor governing whether aerosols can be deposited in various respiratory tract regions in humans. Recently, electronic cigarette (EC), as the alternative of tobacco cigarette, has become increasingly popular all over the world. However, emissions from ECs may contribute to both indoor and outdoor air pollution; moreover, comments about their safety remain controversial, and the number of users is increasing rapidly. In this investigation, aerosols were generated from ECs and studied in the indoor air and in a chamber under controlled conditions of radon concentration. The generated aerosols were characterized in terms of particle number concentrations, size, and activity distributions by using aerosol diffusion spectrometer (ADS), diffusion battery, and cascade impactor. The range of ADS assessment was from 10−3 μm to 10 μm. The number concentration of the injected aerosol particles was between 40 000 and 100 000 particles/cm3. The distribution of these particles was the most within the ultrafine particle size range (0–0.2 μm), and the other particle were in the size range from 0.3 μm to 1 μm. The surface area distribution and the mass size distribution are presented and compared with bimodal distribution. In the radon chamber, all distributions were clearly bimodal, as the free radon decay product was approximately 1 nm in diameter, with a fraction of ~0.7 for a clean chamber (without any additional source of aerosols). The attached fraction with the aerosol particles from the ECs had a size not exceeding 1.0 μm.

381. Sampling Efficiencies of Three Personal Aerosol Samplers within and Beyond the Inhalable Particle Size Range

2001 ◽  
Author(s):  
V. Aizenberg ◽  
P. Baron ◽  
K. Choe ◽  
S. Grinshpun ◽  
K. Willeke
Keyword(s):  
Particle Size ◽  
Size Range ◽  
Particle Size Range

scholarly journals Switching cyclones to increase product particle size range for ore milling circuits

2015 ◽  
Vol 48 (17) ◽  
pp. 92-97 ◽  
Author(s):  
Stefan Botha ◽  
Ian K. Craig ◽  
Johan D. le Roux
Keyword(s):  
Particle Size ◽  
Size Range ◽  
Particle Size Range ◽  
Product Particle
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