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Mining Publication: Examination of Diesel Aftertreatment Systems at NIOSH Lake Lynn Laboratory
Keywords: Aerosols Diesel exhaust Nitrogen dioxide
This page is archived for historical purposes and is no longer being maintained or updated.
Original creation date: October 2007
Authors: AD Bugarski, GH Schnakenberg, JA Hummer, E Cauda, SJ Janisko, LD Patts
Conference Paper - October 2007
Download PDF Document (0.41 MB)
NIOSHTIC2 Number: 20033036
In: MDEC 2007. Proceedings of the Mining Diesel Emissions Council (MDEC) Conference (Richmond Hill, Ontario, Canada, October 1-5, 2007); : 19 pp.
A series of engine/dynamometer tests was conducted to assess the effects of three types of uncatalyzed diesel particulate filters (DPFs), a diesel oxidation catalytic converter (DOC) and three types of high temperature disposable filter elements (HT DFEs) on the concentrations and size distribution of diesel aerosols and concentration of nitric oxides in underground mine air. Tests were conducted in the NIOSH Diesel Laboratory at the Lake Lynn Laboratory experimental mine, a facility developed to allow evaluation of these and other control technologies directly in an underground environment. The aforementioned technologies are evaluated by comparing the aerosol and gas measurements in the mine air 60 m downstream of the exhaust from a naturally aspirated, mechanically controlled engine fitted with the tested systems or muffler and operated at four steady-state engine speed and power modes. The tested DPF and HT DFE systems caused a 10-fold reduction in total mass concentrations of aerosols. The size distribution and number concentration measurements showed that all tested DPF systems and HT DFE elements effectively removed accumulation mode aerosols (D50>30 nm) for all test modes. An increase in peak number concentrations of nucleation mode (D50>30 nm) diesel aerosols is evident for some of tested DPF systems when engine was operated at high-load modes. The effects of uncatalyzed DPFs on nitric oxide (NO) and nitrogen dioxide (NO2) concentrations are found to be minor. A four-fold increase in percentages of NO2 in total nitrogen oxides (NOx) over baseline case was observed for the DOC when the engine was operated at high-load modes. The findings from this study should contribute to better understanding the potential for various control technologies to reduce exposure of underground miners to nano and ultrafine aerosols. In addition, detailed physical characterization of diesel aerosols made directly in occupational setting should foster a better understanding of the health risks associated with exposure to nano and ultrafine diesel aerosols.
Image of publication Examination of Diesel Aftertreatment Systems at NIOSH Lake Lynn LaboratoryConference Paper - October 2007
Download PDF Document (0.41 MB)
NIOSHTIC2 Number: 20033036
In: MDEC 2007. Proceedings of the Mining Diesel Emissions Council (MDEC) Conference (Richmond Hill, Ontario, Canada, October 1-5, 2007); : 19 pp.
See Also
Characterization of Nanometer and Ultrafine Diesel Aerosols in the Underground Mining Environment
Comparing Measurements of Carbon in Diesel Exhaust Aerosols Using the Aethalometer, NIOSH Method 5040, and SMPS
Control Technologies and Strategies for Reducing Exposure of Underground Miners to Diesel Emissions
Diesel Aerosols and Gases in Underground Mines: Guide to Exposure Assessment and Control
Effectiveness of Selected Diesel Particulate Matter Control Technologies for Underground Mining Applications: Isolated Zone Study, 2004
Effects of Diesel Exhaust Aftertreatment Devices on Concentrations and Size Distribution of Aerosols in Underground Mine Air
Effects of Hydrotreated Vegetable Oil on Emissions of Aerosols and Gases from Light-Duty and Medium-Duty Older Technology Engines
Effects of Sintered Metal Diesel Particulate Filter System on Diesel Aerosols and Nitric Oxides in Mine Air
Toward developing a new occupational exposure metric approach for characterization of diesel aerosols
A Wearable Multivariable Sensor for NO2 and CO Detection
Page last reviewed: April 17, 2015
Page last updated: April 17, 2015
Content source: National Institute for Occupational Safety and Health, Mining Program
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