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Biomed Res Int. 2015;2015:524283. doi: 10.1155/2015/524283. Epub 2015 Jun 1.

Workplace Exposure to Titanium Dioxide Nanopowder Released from a Bag Filter System.

Author information

1
EcoPictures Co. Ltd., Seoul 137-865, Republic of Korea ; Research & Business Foundation, Sungkyunkwan University, Suwon 440-746, Republic of Korea.
2
Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea ; Green School, Korea University, Seoul 136-713, Republic of Korea.
3
EcoPictures Co. Ltd., Seoul 137-865, Republic of Korea.
4
School of Mechanical Engineering, Hanyang University, Seoul 133-791, Republic of Korea.
5
Center for Materials Architecture, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea.
6
Center for Environment, Health, and Welfare Research, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea ; Green School, Korea University, Seoul 136-713, Republic of Korea ; University of Science and Technology, Daejeon 305-303, Republic of Korea.

Abstract

Many researchers who use laboratory-scale synthesis systems to manufacture nanomaterials could be easily exposed to airborne nanomaterials during the research and development stage. This study used various real-time aerosol detectors to investigate the presence of nanoaerosols in a laboratory used to manufacture titanium dioxide (TiO2). The TiO2 nanopowders were produced via flame synthesis and collected by a bag filter system for subsequent harvesting. Highly concentrated nanopowders were released from the outlet of the bag filter system into the laboratory. The fractional particle collection efficiency of the bag filter system was only 20% at particle diameter of 100 nm, which is much lower than the performance of a high-efficiency particulate air (HEPA) filter. Furthermore, the laboratory hood system was inadequate to fully exhaust the air discharged from the bag filter system. Unbalanced air flow rates between bag filter and laboratory hood systems could result in high exposure to nanopowder in laboratory settings. Finally, we simulated behavior of nanopowders released in the laboratory using computational fluid dynamics (CFD).

PMID:
26125024
PMCID:
PMC4466336
DOI:
10.1155/2015/524283
[Indexed for MEDLINE]
Free PMC Article

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