Particulate Penetration of Porous Foam Used as a Low Flow Rate Respirable Dust Size Classifier

Details

• Personal Author:
  Baron, Paul A. ; Deye GJ ; Page, Steven J. ; Volkwein, Jon C.
• Description:
  Porous foam has been used as a material for classification of particulate matter into various size fractions. The penetration characteristics of a nominal 90 pores per inch porous foam were studied at various flow rates, face velocities, and foam plug diameters and compared to the aerosol penetration of a 10 mm Dorr Oliver cyclone operated at 1.7 L/min. Poly-dispersed triethanolamine spheres were classified through porous foam plugs and the resulting penetration was determined using an aerodynamic particle sizer. Results showed that for a given plug diameter, as face velocity increased from 26 to 39 cm/sec, the 50 percent cut point decreased from 4.5 to 3.8 microns. Furthermore, as the diameter of the plug increased from 4 to 12 mm, the 50 percent cut points were similar to other plug diameters at equivalent face velocities. The best match to the 1.7 L/min cyclone penetration characteristics occurred at a flow rate of 250 ml/min through a 25 mm by 4 mm diameter section of 90 pore per inch foam. Because of the need to provide short-term or real-time estimates of worker respirable dust exposure, porous foam may be a viable classification media for a low flow rate, disposable respirable dust sampler for use in the coal mining industry. [Description provided by NIOSH]
• Subjects:
  Coal Coal Mining Dust Mining Occupational Health Respiratory Protective Devices Safety
• Keywords:
  Author Keywords: Porous Foam Coal Miners Coal Mining Dusts Dust Samplers Porous Materials Respirable Dust Respiratory Protection Respiratory Protective Equipment Sampling
• Series:
  Mining Publications
• ISSN:
  1047-322X
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  Ohio ; OSHA Region 3 ; OSHA Region 5 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  DART - Division of Applied Research and Technology ; PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  15
• Issue:
  7
• NIOSHTIC Number:
  nn:20020770
• Citation:
  Appl Occup Environ Hyg 2000 Jul; 15(7):561-568
• Federal Fiscal Year:
  2000
• Peer Reviewed:
  True
• Source Full Name:
  Applied Occupational and Environmental Hygiene
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d06cd8ae64178cdc999df44cb6d4920432d1e8856a46461b0c3a1d2cea4a854c588850b3779cdbc04a4e2eb527c932c8eca5f85b3176b012a211840fdd4807d8
• Download URL:
  https://stacks.cdc.gov/view/cdc/220412/cdc_220412_DS1.pdf
• File Type:
  [PDF - 386.80 KB ]