Details:

Personal Author:
Bugarski, Aleksandar D. ; Schnakenberg, George H. ; Mischler, Steven E. ; Noll, James D. ; Patts, Larry D. ; ... More +
Bugarski, Aleksandar D. ; Schnakenberg, George H. ; Mischler, Steven E. ; Noll, James D. ; Patts, Larry D. ; Hummer, Jon A. Less -
Corporate Authors:
Pittsburgh Research Laboratory (National Institute for Occupational Safety and Health)
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:
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Alternative Fuels Diesel Motor Diesel Motor Exhaust Gas Mining Machinery Pollution Control Equipment
Series:
Report of investigations (National Institute for Occupational Safety and Health) ; 9668 ; DHHS publication ; no. (NIOSH) 2006-138
Report of investigations (National Institute for Occupational Safety and Health) ; 9668 ; DHHS publication ; no. (NIOSH) 2006-138 Less -
Document Type:
Report
Collection(s):
Stephen B. Thacker CDC Library collection
Main Document Checksum:
[+]
urn:sha256:7e314aacd4485e07e67539654421886893ece5b2380f8690c5f4b89a45fe2505
Download URL:
https://stacks.cdc.gov/view/cdc/6909/cdc_6909_DS1.pdf
File Type:

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