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Please use this identifier to cite or link to this item: http://hdl.handle.net/1860/2586

Title: Rapid inactivation of airborne bacteria using atmospheric pressure dielectric barrier grating discharge
Authors: Gallagher Jr., Michael J.
Vaze, Nachiket
Gangoli, Shailesh Pradeep
Vasilets, Victor N.
Gutsol, Alexander F.
Milovanova, Tatyana N.
Anandan, Shivanthi
Murasko, Donna M.
Fridman, Alexander A.
Keywords: Airbornemicroorganism;Air Sterilization;Dielectric Barrier Discharge;E. Coli;Nonthermal Plasma
Issue Date: Oct-2007
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Citation: IEEE Transactions on Plasma Science, 35(5): pp. 1501-1510.
Abstract: Dielectric barrier discharge plasma has been known to inactivate many different microorganisms on surfaces when treatment times are on the order of seconds or minutes in duration. In this paper, a unique plasma air cleaning facility was created which combines a dielectric barrier grating discharge (DBGD) with a filterless laboratory-scale ventilation system and is used to treat concentrated bacterial bioaerosol in a moving air stream at air flow rates of 25 L/s. Results indicate that plasma treatment times on the order of milliseconds corresponding to one pass through the DBGD device can achieve 1.5-log reduction in culturable E. coli immediately after contact with plasma and 5-log reduction totally following in the minutes after the plasma treatment. A numerical characterization study was performed to help predict and understand the mechanism of bacteria inactivation in the DBD plasma from a variety of plasma factors.
URI: http://dx.doi.org/10.1109/TPS.2007.905209
Appears in Collections:Faculty Research and Publications (MEM)

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