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Using electrostatic precipitation to control diesel exhaust particulate emissions.

Authors
Farnoud-A; Huang-C; Armendariz-AJ
Source
Proceedings of the 12th U.S./North American Mine Ventilation Symposium, Reno, Nevada, June 9-11, 2008. Wallace KG Jr., ed., Reno, NV: University of Nevada - Reno, 2008 Jun; :515-519
NIOSHTIC No.
20038701
Abstract
Thousands of miners, construction workers, and truck drivers are exposed to diesel exhaust particles. Diesel Particulate Matter (DPM) is a probable human carcinogen and stringent occupational and environmental standards have been established or are planned worldwide. Modifications in fuels and diesel engine designs have reduced emissions, but may not be enough to comply with the tightest standards. Post-combustion aftertreatment devices are likely necessary for many engine operators. However, even the most common and well studied aftertreatment devices fail from time to time. The objective of this study was to design, construct, and test an electrostatic aftertreatment device to treat DPM. An electrostatic precipitator (ESP) was designed and constructed to capture DPM from diesel exhaust, and different configurations were tested to optimize its performance. DPM was produced by a 6 kW diesel-powered electric generator and directed to the ESP through a short section of galvanized steel pipe after the muffler. Number and mass removal efficiencies were measured with a condensation particle counter (CPC) and by sampling through a stainless steel cassette and collecting the DPM on Teflon filters. Particle size distributions were measured with and without control using a 6-stage cascade impactor. The experiments were performed with the engine running at idle and also at medium load. The results show that our first generation ESP provides 60 percent mass removal efficiency, and up to 80 percent number removal efficiency. Power consumption was generally low, about 20 to 30 watts, to achieve these levels of performance. PowerPoint and MP3 files are available.
Keywords
Mining-industry; Fuels; Emission-sources; Particulate-dust; Diesel-exhausts; Diesel-emissions; Dust-particles; Dust-inhalation; Airborne-particles; Electrostatic-precipitators; Electrostatic-filters; Air-purification; Air-quality
Publication Date
20080609
Document Type
Conference/Symposia Proceedings
Editors
Wallace-KG Jr.
Funding Amount
106402
Funding Type
Grant
Fiscal Year
2008
NTIS Accession No.
NTIS Price
ISBN No.
9780615200095
Identifying No.
Grant-Number-K01-OH-008182
Source Name
Proceedings of the 12th U.S./North American Mine Ventilation Symposium, Reno, Nevada, June 9-11, 2008
State
TX
Performing Organization
Southern Methodist University
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