Plasma-catalyzed combined dynamic wave scrubbing: A novel method for highly efficient removal of multiple pollutants from flue gas at low temperatures

Wei Xie; Tao Zhu; Bo Yuan; Shunjiang Fu; Zhishan Mao; Zefu Ye; Zhujun Zhu; Xing Zhang

doi:10.1016/j.jhazmat.2023.132518

Plasma-catalyzed combined dynamic wave scrubbing: A novel method for highly efficient removal of multiple pollutants from flue gas at low temperatures

J Hazard Mater. 2024 Jan 5:461:132518. doi: 10.1016/j.jhazmat.2023.132518. Epub 2023 Sep 9.

Authors

Wei Xie¹, Tao Zhu², Bo Yuan¹, Shunjiang Fu¹, Zhishan Mao¹, Zefu Ye³, Zhujun Zhu³, Xing Zhang⁴

Affiliations

¹ School of Chemical & Environmental Engineering, China University of Mining & Technology (Beijing), Beijing 100083, China.
² 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. Electronic address: bamboozt@cumtb.edu.cn.
³ Gemeng International Co., Ltd, Taiyuan 030002, China.
⁴ School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.

PMID: 37797573
DOI: 10.1016/j.jhazmat.2023.132518

Abstract

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 SO₂, 50.9% for NO, and 51.3% for Hg⁰ 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 SO₂, 98.7% for NO, and 96% for Hg⁰. 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.

Keywords: Dynamic wave scrubbing technology; Hg(0) removal; M(Ce,Cu)-Mn/13X loaded catalyst; Multi-pollutant synergistic control; Non-thermal plasma.