Xie Wei, Zhu Tao, Yuan Bo, Fu Shunjiang, Mao Zhishan, Ye Zefu, Zhu Zhujun, Zhang Xing
School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China.
School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China; Shaanxi Key Laboratory of Lacklustre Shale Gas Accumulation and Exploitation, Shaanxi 710000, China.
J Hazard Mater. 2024 Jan 5;461:132518. doi: 10.1016/j.jhazmat.2023.132518. Epub 2023 Sep 9.
In this study, we developed a novel approach combining a non-thermal plasma system with M(Ce, Cu)-Mn/13X oxidation and post-dynamic wave wet scrubbing technologies, for effectively removing multiple pollutants from flue gases. Experimental results demonstrated that the plasma coupled with post-dynamic wave wet scrubbing achieved impressive synergistic removal efficiencies of 98% for SO, 50.9% for NO, and 51.3% for Hg in flue gas. Through the use of M(Ce, Cu)-Mn/13X catalysts synthesized via the co-precipitation, the oxidation efficiency of the system is significantly enhanced, with synergistic removal efficiencies reaching up to 100% for SO, 98.7% for NO, and 96% for Hg. Notably, (Ce-Mn)/13X exhibited superior catalytic activity, the results are supported by comprehensive sample characterization, DFT mechanistic analysis, and experimental validation. Additionally, we elucidated the plasma oxidation mechanism and the working principles of the M(Ce, Cu)-Mn/13X loaded catalysts. This innovative technology not only facilitates pollutant oxidation but also ensures their complete removal from flue gas, providing a high-efficiency, cost-effective, and environmentally friendly solution for the treatment of multi-pollutants in flue gases.
在本研究中，我们开发了一种将非热等离子体系统与M（Ce，Cu）-Mn/13X氧化及动态波后湿式洗涤技术相结合的新方法，用于有效去除烟气中的多种污染物。实验结果表明，等离子体与动态波后湿式洗涤相结合，对烟气中的SO的协同去除效率达到了令人印象深刻的98%，对NO的协同去除效率为50.9%，对Hg的协同去除效率为51.3%。通过使用共沉淀法合成的M（Ce，Cu）-Mn/13X催化剂，系统的氧化效率显著提高，对SO的协同去除效率高达100%，对NO的协同去除效率为98.7%，对Hg的协同去除效率为96%。值得注意的是，（Ce-Mn）/13X表现出优异的催化活性，综合样品表征、DFT机理分析和实验验证支持了该结果。此外，我们阐明了等离子体氧化机理以及负载M（Ce，Cu）-Mn/13X催化剂的工作原理。这项创新技术不仅促进了污染物的氧化，还确保了它们从烟气中被完全去除，为烟气中多污染物的处理提供了一种高效、经济且环保的解决方案。
