isolated zone study, 2004

Details

• Personal Author:
  Bugarski, Aleksandar D. ; Hummer, Jon A. ; Mischler, Steven E. ; Noll, James D. ; Patts, Larry D. ; Schnakenberg, George H. Jr.
• Corporate Authors:
  National Institute for Occupational Safety and Health. Pittsburgh Research Laboratory
• Description:
  "The National Institute for Occupational Safety and Health conducted a study to determine the effects of selected, state-of-the-art emission control technologies on the ambient concentrations of particulate matter and gases emitted by underground diesel-powered mining equipment. Tests were conducted in an isolated zone of an underground mine to evaluate the effectiveness of alternative fuel formulations, namely, water-fuel emulsions, blended biodiesel fuels, ultralow sulfur diesel fuel, and #1 diesel
  
  and selected exhaust after treatment devices, namely, diesel oxidation catalysts (DOCs), diesel particulate filter (DPF) systems, and filtration systems designed around high-temperature disposable filter elements. The results showed that using a cold-weather and warm-weather water-fuel emulsion formulation reduced mass concentrations of elemental carbon (EC) by about 70% and 85%, respectively. The 20% and 50% soy biodiesel blends reduced EC by 49% and 66%, respectively. The reductions were slightly less pronounced for the 20% and 50% yellow grease biodiesel blends-33% and 56%, respectively. EC concentrations were unaffected by using ultralow sulfur diesel in place of #1 diesel. Use of the reformulated fuels did not substantially alter the concentrations of nitric oxide and carbon monoxide. However, a measurable increase in the nitrogen dioxide (NO2) peak concentration was observed during the biodiesel tests. The ArvinMeritor (AM) fuel-burner DPF system with a palladium-catalyzed DOC reduced EC concentrations by 92%. The diesel filter elements from Donaldson Co., Inc., and Filter Service & Testing Corp. reduced the EC concentration of the mine air by 92% and 70%, respectively. When the palladium-based DOC was used with the AM DPF, it raised the average and peak downstream NO2 concentrations by a factor of three. Tests of the AM DPF system with a platinum-catalyzed DOC and CAP/ETG catalytic particulate oxidizer system had to be terminated because the elevated NO2 concentrations threatened to overexpose the operator. The tests with only a selected DOC also resulted in increased NO2 concentrations in mine air." - NIOSHTIC-2
  
  
• Content Notes:
  by Aleksandar D. Bugarski, George H. Schnakenberg, Jr., Steven E. Mischler, James D. Noll, Larry D. Patts, and Jon A. Hummer.
  
  Includes bibliographical references (p. 66-67).
  
  
• Subjects:
  Occupational Health Safety
• Series:
  NIOSH Numbered Publications
• Subseries:
  Report of Investigations
• DOI:
  https://doi.org/10.26616/NIOSHPUB2006138
• Document Type:
  Text
• Genre:
  Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  print ; vi, 67 p. : ill. ; 28 cm.
• NIOSHTIC Number:
  nn:20030929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:0d6a3845f550d819dbf6b4413823c4977320b8efe4a7229c21f0c63f1c8feff5d2574a953e6e99169bf42ae94107c0de771b9d85628c701d96ca1c1f2f9175ce
• Download URL:
  https://stacks.cdc.gov/view/cdc/6909/cdc_6909_DS1.pdf
• File Type:
  [PDF - 12.40 MB ]