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Today our environment is facing serious threats due to exhaust gases from coal-burning power plants, automotive engines, steel plants, paper mills and chemical plants. Increasing levels of nitrogen oxide (NOx) and sulfur dioxide (SO2) are hindering the air quality (Kim 1999). Environmental engineering is facing new challenges to control air quality. Several new gas treatment methods have been investigated in recent years, and Pulsed Corona Reactor (PCR) methods represent one of the very promising technology paradigms with application to improving air quality.
