Aqueous particle generation with a 3D printed nebulizer
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amt-13-6807-2020.pdf
Description
Published version
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924.56 KB
Format
Adobe PDF
Checksum (MD5)
bd77cd0cefe8376f2b6934a455e06037
Author(s)
Rösch, Michael
Cziczo, Daniel J
Date Issued
December 16, 2020
Journal
Atmospheric Measurement Techniques
Publisher
Copernicus GmbH
Citation
Rösch, M. and Cziczo, D. J.: Aqueous particle generation with a 3D printed nebulizer, Atmos. Meas. Tech., 13, 6807–6812.
Version
Final published version
Abstract
In this study, we describe the design and testing of a high-output-stability, constant-liquid-feed nebulizer using the Venturi principle to generate liquid particles from solutions. This atomizer, the PRinted drOpleT Generator (PROTeGE), was manufactured using stereolithography (SLA) printing. Different concentrations of ammonium sulfate solutions were used to characterize the size and number concentration of the generated particles. A comparison of a 3D printed 0.5 mm orifice against a commercially available 0.5 mm brass orifice using the same ammonium sulfate solution was also performed. The particle number concentration generated with the printed orifice was higher, by , than the particle number concentration generated with the brass orifice.
PROTeGE is also capable of dispersing polystyrene latex (PSL) spheres for calibration purposes. The particle number concentrations obtained in this study ranged from ∼ 10 000 cm−3 for 0.75 µm to ∼ 100 cm−3 for 5.0 µm PSL particles with a dependence on the concentration of the dispersed solution. For the different concentrated ammonium sulfate solutions particle number concentrations from ∼ 14 000 cm−3 for 0.1 g L−1 to 7600 cm−3 for 5.0 g L−1 were measured. An additional measurement with a scanning electrical mobility system (SEMS) was performed for the 0.6 g L−1 solution to measure particles in the size range of 10 to 1000 nm. The generated particle number size distributions (PNSDs) showed a maximum at 50 nm with particle number concentrations of ∼ 40 000 cm−3. PROTeGE is easy to manufacture and operate, low in maintenance, and cost-effective for laboratory and field generation of particles from aqueous media in a size range of 10 to 5000 nm.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
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DOI of Published Version
https://doi.org/10.5194/amt-13-6807-2020
