Mischler-SE; Bugarski-AD; Schnakenberg-GH
Proceedings of the Eighth International Mine Ventilation Congress, Brisbane, Queensland, Australia, July 6-8, 2005. Carlton, Victoria, Australia: Australasian Institute of Mining and Metallurgy, 2005 Jul; :263-274
An investigation was done at a U.S. underground mine to characterize diesel aerosols and to assess the effects of various control technologies on the concentrations and properties of particulate matter and gases emitted by heavy-duty diesel-powered equipment. The study was dedicated to evaluating the impact on mine air quality of contemporary diesel particulate filter (DPF) systems installed on mining equipment. Additional efforts were made to assess the effect of blended biodiesel fuels, yellow grease and soy, ultralow sulfur fuel, a fuel emulsion, and selected diesel oxidation catalysts on air quality and emissions. The carbon analysis performed on the collected samples showed that the tested DPF systems reduced the mass concentrations of elemental carbon (EC) in mine air by 70% to 92%. In addition, TEOM measurements collected during these tests showed that the total diesel particulate matter concentration in the mine air was reduced by more than 65% when DPF systems were used. The biodiesel blends reduced EC concentrations in the mine air by between 49% and 33%, for the B20 (20% biodiesel/80% #2 diesel) of soy and yellow grease, respectively, and between 66% and 56% for the B50 (50% biodiesel/50% #2 diesel) of soy and yellow grease, respectively. The water-in-diesel fuel emulsion reduced EC concentrations by as much as 85%. Maximum concentrations of NO2 increased when catalyzed DPF systems were used instead of mufflers.
Diesel-emissions; Underground-mining; Mining-industry; Aerosols; Mining-equipment; Air-quality; Filters; Fuels; Occupational-health; Metal-mining; Filtration; Ventilation