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<p>A rotating gliding arc (RGA) device driven by synergistic flow and magnetic fields was developed for enhanced nitrogen fixation. The effects of flow field distribution, magnetic field intensity, and N<sub>2</sub>/O<sub>2</sub> ratio on fixation performance were investigated. A uniform tangential inlet improved arc stability, suppressed reverse breakdown, and extended the operating range of the RGA, resulting in the highest fixation efficiency. At an air flow rate of 3 L·min<sup>−1</sup>, the device achieved an NO<sub><i>x</i></sub> concentration of 7623 ppm in the effluent, with an energy cost as low as 3.6 MJ·mol<sup>−1</sup>. This configuration also enhanced plasma non-equilibrium, promoting nitrogen excitation and reactive species generation. Increasing magnetic field strength improved efficiency up to 200 mT, beyond which gains plateaued. An N<sub>2</sub>/O<sub>2</sub> ratio of 6:4 yielded optimal nitrogen excitation and fixation performance.</p>

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Flow and magnetic-driven rotating gliding arc reactors for enhanced nitrogen fixation

  • 期刊论文

  • 发表日期：

    2026年1月1日

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  • Yue Feng,
  • Shanghe Dai,
  • Mengying Zhu,
  • Yuting Gao,
  • Bohan Chen,
  • Jieping Fan,
  • Tianyu Li,
  • Renwu Zhou

摘要

A rotating gliding arc (RGA) device driven by synergistic flow and magnetic fields was developed for enhanced nitrogen fixation. The effects of flow field distribution, magnetic field intensity, and N2/O2 ratio on fixation performance were investigated. A uniform tangential inlet improved arc stability, suppressed reverse breakdown, and extended the operating range of the RGA, resulting in the highest fixation efficiency. At an air flow rate of 3 L·min−1, the device achieved an NOx concentration of 7623 ppm in the effluent, with an energy cost as low as 3.6 MJ·mol−1. This configuration also enhanced plasma non-equilibrium, promoting nitrogen excitation and reactive species generation. Increasing magnetic field strength improved efficiency up to 200 mT, beyond which gains plateaued. An N2/O2 ratio of 6:4 yielded optimal nitrogen excitation and fixation performance.