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http://dx.doi.org/10.5572/KOSAE.2008.24.5.512

The Studies of Photocatalyst Development and the Optimum Operation Conditions for the Removal of Ammonia in a Mixed Reactor of Liquid-vapor Phase  

Kim, Hae-Ri (Department of Chemical Engineering, School of Environmental Applied Chemistry and The Green Energy Center, Kyung Hee University)
Jeon, Min-Kyu (Department of Chemical Engineering, School of Environmental Applied Chemistry and The Green Energy Center, Kyung Hee University)
Kim, Joon-Woo (Department of Chemical Engineering, School of Environmental Applied Chemistry and The Green Energy Center, Kyung Hee University)
Joo, Gwang-Tae (Korea Industrial Testing Co., Ltd.)
Choung, Suk-Jin (Department of Chemical Engineering, School of Environmental Applied Chemistry and The Green Energy Center, Kyung Hee University)
Publication Information
Journal of Korean Society for Atmospheric Environment / v.24, no.5, 2008 , pp. 512-522 More about this Journal
Abstract
Ammonia is a major compound of odor in livestock house. To enhance the performance of ammonia oxidation (decomposition). the gas-liquid, two phase photocatalytic oxidation system was designed and prepared in this study. Commercial P-25 as $TiO_2$ catalyst was used for ammonia decomposition. V/P-25 catalyst prepared by sol gel method was also used for the removal of by-producted $NO_x$ in $NH_3$ oxidation reaction. When $TiO_2$ was used as a photocatalyst, the conversion to $N_2$ in ammonia decomposition reached above 90% until 200hr (The air flow rate of 4L/min with the ammonia concentration up to 25ppm.). However, considerable amounts of NO and $NO_2$ were formed as a result of $NH_3$ oxidation (as a by-product). Therefore, we added Vanadia impregnated $TiO_2$(P-25) catalyst for the removal of $NO_x$ at the end of reaction trail. The results of a pilot-scale operation were successful to achieve the simultaneous removal of $NH_3\;and\;NO_x$ about 81 and 87%, respectively.
Keywords
Photocatalyst; Photodecomposition; Ammonia$NO_x$ reduction; V/P-25;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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