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http://dx.doi.org/10.7464/ksct.2017.23.3.294

Oxidation and Removal of NO Emission from Ship Using Hydrogen Peroxide Photolysis  

Lee, Jae-Hwa (Department of Environmental Engineering, Pusan National University)
Kim, Bong-Jun (Wintech)
Jeon, Soo-Bin (Department of Environmental Engineering, Pusan National University)
Cho, Joon-Hyung (Department of Environmental Engineering, Pusan National University)
Kang, Min-Kyoung (Institute of Environmental Studies, Pusan National University)
Oh, Kwang-Joong (Department of Environmental Engineering, Pusan National University)
Publication Information
Clean Technology / v.23, no.3, 2017 , pp. 294-301 More about this Journal
Abstract
Air pollution associated with the $NO_x$ emission from the ship engines is becoming one of the major environmental concerns these days. As the regulations on ship pollutants are strengthened, the wet absorption method, for controlling complex pollutants in a confined space, has the advantage of simultaneously removing various pollutants, but the low solubility of nitrogen monoxide is drawback. In this study, for improving existing denitrification scrubber system, NO oxidation process by hydroxyl radical produced from irradiating UV light on $H_2O_2$ is suggested and the $H_2O_2$ decomposition rates and hydroxyl radical quantum yields were measured to find the optimum condition of $H_2O_2$ photolysis reaction. As a result, the optimum quantum yield and photolysis rate of $H_2O_2$ were 0.8798, $0.6mol\;h^{-1}$ at 8 W, 2 M condition, and oxidation efficiency of 1000 ppm NO gas was 40%. In batch system, NO removal efficiency has a range of 65.0 ~ 67.3% according to input gas concentration of 100 ~ 1500 ppm. This results indicate that the scrubber system using hydrogen peroxide photolysis can be applied as air pollution prevention facility of ship engines.
Keywords
Ship emission; NO oxidation; Hyrogen peroxide; Photolysis;
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