Removal of DPM from an Air Stream Using Micron-Scale Droplets

Details

• Personal Author:
  Rojas-Mendoza L ; Sarver E ; Saylor JR
• Description:
  Respiratory exposures to diesel particulate matter (DPM) present health risks, particularly in confined environments with a relatively high number of emission sources. Despite a variety of existing control technologies, exposures in some occupational environments remain unacceptably high (e.g., underground mine environments), and new technologies and abatement strategies are needed. The physics of droplet-particle interactions suggests that micron-scale water drops can effectively scavenge DPM from an air stream. Here, experimental results are presented on DPM removal from a diesel exhaust stream using a fog of water droplets. Measured scavenging coefficients, based on both number density and mass, show that significant DPM removal is possible. The potential scavenging mechanisms at play are discussed, and insights are offered on future work necessary for scale-up of a fog-based exhaust treatment technology. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollutants, Occupational Mining Occupational Health Particulate Matter Safety
• Keywords:
  Airborne Particulates Author Keywords: Diesel Particulate Matter Diesel Exhaust DPM DPM Coagulation DPM Removal Micron-scale Water Drops Mining Industry Particle Aerodynamics Underground Mines
• ISSN:
  1680-8584
• 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
• Volume:
  17
• Issue:
  7
• NIOSHTIC Number:
  nn:20069034
• Citation:
  Aerosol Air Qual Res 2017 Jul; 17(7):1865-1874
• Contact Point Address:
  Emily Sarver, Department of Mining and Minerals, Virginia Tech, Blacksburg, VA 24060, USA
• Email:
  esarver@vt.edu
• Federal Fiscal Year:
  2017
• Performing Organization:
  Virginia Tech
• Peer Reviewed:
  True
• Start Date:
  20140901
• Source Full Name:
  Aerosol and Air Quality Research
• End Date:
  20190831
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:457ec9ab76b446a3642bce16bb14409d6f40fa3b3630ad5dc67220019bafde8f4dba1c0f6cb7fc27aa91e6ece464837e65f2ae011949efa1e5d1b06665cc5d3c
• Download URL:
  https://stacks.cdc.gov/view/cdc/207584/cdc_207584_DS1.pdf
• File Type:
  [PDF - 555.53 KB ]