Synergistically Removal of Vocs Based on Low-Temperature Plasma and Catalytic Oxidation Technology

VOCs emissions in the chemical industry have always contained a large proportion. Xylene with paint thinner as the main emission route is the research object of this paper. Xylene was used as the research object, nickel foam as catalyst carrier, goethite as catalyst active component. Low-temperature plasma synergistic supported catalyst catalytic on xylene removal was investigated. The results were that optimal conditions for goethite@nickel foam were calcination time of 5 min, power of 60 W, oxygen flow of 60 mL min-1, goethite loading of 5%. With synergistic effect of plasma and catalyst, its COx selectivity was raised up to 87%. The products include small gas molecules. Meanwhile, light yellow solid materials including phenol and 1,4-benzoquinone and nitrophenol, etc was less generated. The active component goethite of catalyst not only increased the removal rate of xylene but also deepen oxidation of xylene in a higher selectivity of COx