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Title: Dry particle generation with a 3-D printed fluidized bed generator

Abstract

We describe the design and testing of PRIZE (PRinted fluidIZed bed gEnerator), a compact fluidized bed aerosol generator manufactured using stereolithography (SLA) printing. Dispersing small quantities of powdered materials – due to either rarity or expense – is challenging due to a lack of small, low-cost dry aerosol generators. With this as motivation, we designed and built a generator that uses a mineral dust or other dry powder sample mixed with bronze beads that sit atop a porous screen. A particle-free airflow is introduced, dispersing the sample as airborne particles. The total particle number concentrations and size distributions were measured during different stages of the assembling process to show that the SLA 3-D printed generator did not generate particles until the mineral dust sample was introduced. Furthermore, time-series measurements with Arizona Test Dust (ATD) showed stable total particle number concentrations of 10–150 cm-3, depending on the sample mass, from the sub- to super-micrometer size range. Additional tests with collected soil dust samples are also presented. PRIZE is simple to assemble, easy to clean, inexpensive and deployable for laboratory and field studies that require dry particle generation.

Authors:
ORCiD logo; ;
Publication Date:
Research Org.:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1361121
Alternate Identifier(s):
OSTI ID: 1374976
Grant/Contract Number:  
SC0014487
Resource Type:
Published Article
Journal Name:
Atmospheric Measurement Techniques (Online)
Additional Journal Information:
Journal Name: Atmospheric Measurement Techniques (Online) Journal Volume: 10 Journal Issue: 6; Journal ID: ISSN 1867-8548
Publisher:
Copernicus GmbH
Country of Publication:
Germany
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES

Citation Formats

Roesch, Michael, Roesch, Carolin, and Cziczo, Daniel J. Dry particle generation with a 3-D printed fluidized bed generator. Germany: N. p., 2017. Web. doi:10.5194/amt-10-1999-2017.
Roesch, Michael, Roesch, Carolin, & Cziczo, Daniel J. Dry particle generation with a 3-D printed fluidized bed generator. Germany. doi:10.5194/amt-10-1999-2017.
Roesch, Michael, Roesch, Carolin, and Cziczo, Daniel J. Fri . "Dry particle generation with a 3-D printed fluidized bed generator". Germany. doi:10.5194/amt-10-1999-2017.
@article{osti_1361121,
title = {Dry particle generation with a 3-D printed fluidized bed generator},
author = {Roesch, Michael and Roesch, Carolin and Cziczo, Daniel J.},
abstractNote = {We describe the design and testing of PRIZE (PRinted fluidIZed bed gEnerator), a compact fluidized bed aerosol generator manufactured using stereolithography (SLA) printing. Dispersing small quantities of powdered materials – due to either rarity or expense – is challenging due to a lack of small, low-cost dry aerosol generators. With this as motivation, we designed and built a generator that uses a mineral dust or other dry powder sample mixed with bronze beads that sit atop a porous screen. A particle-free airflow is introduced, dispersing the sample as airborne particles. The total particle number concentrations and size distributions were measured during different stages of the assembling process to show that the SLA 3-D printed generator did not generate particles until the mineral dust sample was introduced. Furthermore, time-series measurements with Arizona Test Dust (ATD) showed stable total particle number concentrations of 10–150 cm-3, depending on the sample mass, from the sub- to super-micrometer size range. Additional tests with collected soil dust samples are also presented. PRIZE is simple to assemble, easy to clean, inexpensive and deployable for laboratory and field studies that require dry particle generation.},
doi = {10.5194/amt-10-1999-2017},
journal = {Atmospheric Measurement Techniques (Online)},
number = 6,
volume = 10,
place = {Germany},
year = {2017},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.5194/amt-10-1999-2017

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