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Research Abstracts Online
January 2008 - March 2009

University of Minnesota Twin Cities
Institute of Technology
Department of Mechanical Engineering

PI: Thomas H. Kuehn, Fellow

Aerosol Particle Electroscavenging by Droplets

Cloud particles fall through a population of atmosphere aerosol particles that collide with the cloud particles and fall to the ground. This phenomenon is defined as "scavenging” and can be used as a way of pollutant control. Wet scrubbers as air pollution control devices use the same theory as scavenging to remove both particulate and gas contaminants from the industrial exhaust streams. Electrostatic wet scrubbers were developed in an attempt to improve the collection efficiency for submicron particles by raising the attraction force between the droplets and particles. The objective of this work is to develop both two- and three-dimensional numerical models for describing the phenomena of particle collection by multiple droplets. Those models can be applied to atmospheric particle scavenging, indoor particulate pollution control, and other relative types of air-cleaning equipment and aerosol sampling and measuring instruments.

Group Member

Meng Zhang, Graduate Student