Abstract
Odor control has gained importance for ensuring a comfortable living environment. In this paper, the authors report the experimental results of a study of the detailed characteristics of a barrier-type packed-bed nonthermal plasma reactor used for odor control. This plasma reactor has been widely used for volatile organic compound (VOC) decomposition and NOx reduction. The reactor is energized by a low-cost 60 Hz AC power supply. Removal efficiency and the concentrations of byproducts are studied under various experimental conditions. The complete decomposition of the main odor component, namely, NH3, is obtained with minimal reaction byproduct formation (maximum N2O concentration, 10 ppm) in a dry environment. The decomposition is deteriorated by the addition of moisture. The minimum residence time is determined for the complete removal of NH3 in the case of the packed-bed plasma reactor. The pellet diameter has little effect on the removal tendency, and the reactor performed better than a silent corona. Mixing another odor component such as CH3CHO into the gas stream has little effect on the NH3 removal efficiency.
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