NH3 Capture by Air Plasma under Different Operation Modes: Feasibility, Energy Efficiency, and Mechanisms

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Researchers working on plasma-based gas treatment or NH3 recovery will find detailed mechanistic analysis and energy performance data.

🏢実務担当者:Practitioners in waste treatment or agricultural emission control may consider the transition mode for pilot-scale applications.

Abstract The significant loss of nitrogen as NH3 from agriculture and livestock leads to severe environmental pollution and substantial resource waste. The combination of atmospheric pressure air plasma technology and NH3 treatment can realize NH3 capture and its conversion into recyclable NH4NO3. However, existing studies are mostly limited to the optimization of the single NOx-dominated product mode, overlooking the application potential of other product modes. By characterizing the O3, transition, and NO3 operation modes of surface micro discharge (SMD), this study explores that the effects of various frequencies, discharge powers, and working gases on mode transition and energy efficiency for NH3 capture. SMD can capture NH3 and generate NH4NO3 under all operation modes, and the often-overlooked transition mode is the optimal mode for NH3 capture. The underlying mechanisms of NH3 capture are further explored and compared. In the O3 mode, the energy consumption for NH3 capture decreases as the voltage increases, while in the NOx mode, energy consumption increases. The lowest energy consumption is observed in the transition mode, where both strong oxidant O3 and sufficient nitration precursor HNO2 coexist. This mode enables more efficient gas conversion without transitioning into the high-energy NOx mode, achieving a higher yield of NH4NO3 while minimizing energy consumption.

• openalex https://doi.org/10.1088/1361-6595/ae7f4bfirst seen 2026-06-20 05:44:34