Review on the NO removal from flue gas by oxidation methods |
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Authors: | Meng Si Boxiong Shen George Adwek Lifu Xiong Lijun Liu Peng Yuan Hongpei Gao Cai Liang Qihai Guo |
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Institution: | Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering,Hebei University of Technology, Tianjin300401, China;Tianjin Key Laboratory of Clean Energy and Pollutant Control, School of Energy and Environmental Engineering,Hebei University of Technology, Tianjin300401, China;Department of Energy and Environmental Engineering, Mount Kenya University, Thika, Kenya;China Huaneng Group Clean Energy Technology Research Institute Co.Ltd., Beijing 102209, China;Chengdu Dongfang KWH Environmental Protection Catalysts Co.Ltd., Chengdu 610042, China;TUS Environmental Science and Technology Development Co.Ltd., Yichang 443000, China |
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Abstract: | Due to the increasingly strict emission standards of NOx on various industries, many traditional flue gas treatment methods have been gradually improved. Except for selective catalytic reduction (SCR) and selective non-catalytic reduction (SNCR) methods to remove NOx from flue gas, theoxidation method is paying more attention to NOx removal now because of the potential to simultaneously remove multiple pollutants from flue gas. This paper summarizes the efficiency, reaction conditions, effect factors, and reaction mechanism of NO oxidation from the aspects of liquid-phase oxidation, gas-phase oxidation, plasma technology, and catalytic oxidation. The effects of free radicals and active components of catalysts on NO oxidation and the combination of various oxidation methods are discussed in detail. The advantages and disadvantages of different oxidation methods are summarized, and the suggestions for future research on NO oxidation are put forward at the end. The review on the NO removal by oxidation methods can provide new ideas for future studies on the NO removal from flue gas. |
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Keywords: | Corresponding author Flue gas treatment NO oxidation Liquid-phase oxidation Gas-phase oxidation Catalytic oxidation |
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