A large volume of atmospheric plasma for air treatment

초록

Nonthermal atmospheric pressure plasma, also known as cold atmospheric pressure plasma, is emerging as a highly interesting and promising technology because of it unique capabilities. It offers a flexible start/stop system and facilitates chemical reactions in favorite conditions of low temperatures and atmospheric pressure. Furthermore, plasma systems incorporated using renewable energy sources will be considered indirect energy storage. Since its unique features, the cold plasma is capable of purifying air indoors, surrounding workspaces, and diesel engines at low operating temperatures. Dielectric barrier discharge or gliding arc configurations can easily generate air plasma discharge. However, humid air requires high breakdown voltage; consequently, the gap between two electrodes should be small to maintain low applied voltage, resulting in small volumes of air plasma discharge. Unfortunately, treatment of contaminated air requires large volumes. Therefore, there are challenges in large-scale air plasma discharge. Herein, a recent development of a large volume of air discharge is discussed to present the potential and challenges of using plasma for purifying air. Specifically, honeycomb plasma discharge and an injection method with a gliding arc plasma for contaminated air treatment are focused. © 2025 Elsevier Inc. All rights reserved.

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