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Electrostatic Precipitation

Electrostatic Precipitators are widely used in utility and industrial applications to remove particles from a gas stream to control pollution. Ohio University developed membrane technology to replace metal plates in precipitators for better removal of particles, even extremely small particles (fines) that are difficult to control. The membranes are a substrate for a continuous water film that becomes the collecting electrode. Because it is a continuous film, it is always being refreshed, never subject to particle buildup and back-corona issues. As a result, you get higher power levels (for the same applied voltage), greater collection efficiency, and no particle re-entrainment from the water film. This technology has been commercially deployed.

Current work focuses on using the technology to control mercury emissions (when coupled with chlorine injection), and development of laminar collecting sections to control 100% of fine particle emissions.