Laboratory Demonstration of DPM Mass Removal from an Exhaust Stream by Fog Drops

Details

• Personal Author:
  Henderson Z ; Rojas-Mendoza L ; Sarver E ; Saylor JR
• Description:
  Diesel particulate matter (DPM) is a major occupational health hazard in underground mine environments, even with available abatement technologies. Prior work has demonstrated that micrometer-scale water droplets, or "fog," may be effective in removing significant number fractions of DPM from a conditioned exhaust stream. Here, a series of laboratory experiments are described which demonstrate that such a treatment can remove significant DPM mass from an unconditioned stream. The removal mechanism involved coagulation of the DPM and drops. The fog treatment removed about 45 percent more DPM mass on average than no treatment. Varying engine load, flow rate and fog droplet number density did not significantly affect the results under the range of conditions tested. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollutants, Occupational Mining Occupational Health Particulate Matter Safety Ventilation
• Keywords:
  Airborne Particulates Diesel Exhaust Ultrafine Particles Underground Mining
• ISSN:
  0026-5187
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Journal Article
• Place as Subject:
  OSHA Region 3 ; OSHA Region 4 ; South Carolina ; Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  55-60
• Volume:
  69
• Issue:
  11
• NIOSHTIC Number:
  nn:20068996
• Citation:
  Min Eng 2017 Nov; 69(11):55-60
• Federal Fiscal Year:
  2018
• Performing Organization:
  Virginia Tech
• Peer Reviewed:
  True
• Start Date:
  20140901
• Source Full Name:
  Mining Engineering
• End Date:
  20190831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:3aae675464dec958709ae149322dcced6ee60fb4ac4d0bd21d6ddde129351887dd7f87ba2191f55f1c6eaada0a09ffab7bd609c06aa77159059eb0159a065bd4
• Download URL:
  https://stacks.cdc.gov/view/cdc/207552/cdc_207552_DS1.pdf
• File Type:
  [PDF - 310.29 KB ]