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Volatile organic compounds degradation by nonthermal plasma: a review

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Abstract

Volatile organic compounds (VOCs) have posed a severe threat on both ecosystem and human health which thus have gained much attention in recent years. Nonthermal plasma (NTP) as an alternative to traditional methods has been employed to degrade VOC in the atmosphere and wastewater for its high removal efficiency (up to 100%), mild operating conditions, and environmental friendliness. This review outlined the principles of NTP production and the applications on VOC removal in different kinds of reactors, like single/double dielectric barrier discharge, surface discharge, and gliding arc discharge reactors. The combination of NTP with catalysts/oxidants was also applied for VOC degradation to further promote the energy efficiency. Further, detailed explanations were given of the effect of various important factors including input/reactor/external conditions on VOC degradation performance. The reactive species (e.g., high-energy electrons, HO·, O·, N2+, Ar+, O3, H2O2) generated in NTP discharge process have played crucial roles in decomposing VOC molecules; therefore, their variation under different parameter conditions along with the reaction mechanisms involved in these NTP technologies was emphatically explained. Finally, a conclusion of the NTP technologies was presented, and special attention was paid to future challenges for NTP technologies in VOC treatment to stimulate the advances in this topic.

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Funding

This work received financial supports from the National Natural Science Foundation of China (51877208), and the Natural Science Foundation of Anhui Province (Grant No. 2008085MB46 and 1808085MA13). This research work received funding from the Deputyship for Research & Innovation, Ministry of Education in Saudi Arabia, through the project number (IFPRP: 495–247-1442) and King Abdulaziz University, DSR, Jeddah, Saudi Arabia.

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All authors contributed to the study. Yuan He: prepared the first draft of the manuscript; Jie Shen and Njud S. Alharbi: reviewed and edited the manuscript; Changlun Chen: submitted and revised the manuscript. All authors read and approved the final manuscript.

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Correspondence to Changlun Chen.

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Responsible Editor: George Z. Kyzas

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He, Y., Shen, J., Alharbi, N.S. et al. Volatile organic compounds degradation by nonthermal plasma: a review. Environ Sci Pollut Res 30, 32123–32152 (2023). https://doi.org/10.1007/s11356-023-25524-5

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  • DOI: https://doi.org/10.1007/s11356-023-25524-5

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