Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China; MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University, Beijing 102206, China.
Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China.
J Environ Sci (China). 2022 Oct;120:144-157. doi: 10.1016/j.jes.2021.06.020. Epub 2022 Feb 2.
Microwave radiation has received extensive attention due to its significant thermal and non-thermal effects, and the development of MW-based denitrification in flue gas has become one of the most promising methods to avoid the defects of ammonia escape, high temperature and cost in traditional SCR. This review introduces the thermal and non-thermal effects of microwaves and divides MW-based denitrification methods into MW reduction and oxidation denitrification, systematically summarizes these denitrification methods, including MW discharge reduction, MW-induced catalytic reduction using active carbon, molecular sieves, metal oxides (transition metals, perovskites, etc.), MW-induced oxidation denitrification with and without additional oxidant, and discusses their removal pathway and mechanism. Finally, several research prospects and directions regarding the development of microwave-based denitrification methods are provided.
微波辐射因其显著的热效应和非热效应而受到广泛关注，基于微波的烟气脱硝技术的发展成为避免传统 SCR 中氨逃逸、高温和高成本等缺陷的最有前途的方法之一。本文介绍了微波的热效应和非热效应，并将基于微波的脱硝方法分为微波还原和氧化脱硝，系统地总结了这些脱硝方法，包括微波放电还原、微波诱导活性炭、分子筛、金属氧化物（过渡金属、钙钛矿等）催化还原、微波诱导有/无外加氧化剂氧化脱硝，并讨论了它们的去除途径和机制。最后，提出了微波脱硝方法发展的几个研究前景和方向。
