Degradation of toluene in flue gas by low temperature plasma catalysis

SHANG Chao; WEI Xian-Ge; BAI Min-Dong; DU Chang-Ming

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China Environmental Science ›› 2020, Vol. 40 ›› Issue (9) : 3714-3720.

Air Pollution Control

Degradation of toluene in flue gas by low temperature plasma catalysis

SHANG Chao¹, WEI Xian-Ge¹, BAI Min-Dong², DU Chang-Ming¹

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Abstract

A plasma micro discharge packed bed reactor and a plasma micro discharge packed bed reaction system were developed and porous ceramic was used as the packed bed material. The effects of residence time, catalyst loading, initial concentration, energy density and discharge voltage on the toluene removal ability of the reaction system were investigated by using the control variable method. The experimental results showed that the optimal parameter profile for above five factors was 1.1s, Co/Mn catalyst with catalyst loading of 15% and molar ratio of 0.25, 189.52mg/m³, 6000J/L and 9.5kV, respectively. Meanwhile, the characterization of the porous ceramic packed bed by SEM and XRD showed that Mn catalyst included Mn₂O₃ and Mn₃O₄ crystal, Co/Mn catalyst included CoMnO₃ and MnO₂ crystal, Fe/Mn catalyst included FeMnO₃, Fe₂O₃ and Mn₂O₃ crystal, and the crystal particle of Mn catalyst was more uniform than that of Co/Mn catalyst and Fe/Mn catalyst.

Key words

coal-fired flue gas / organic pollutants / plasma catalysis / volatile organic pollutants

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SHANG Chao, WEI Xian-Ge, BAI Min-Dong, DU Chang-Ming. Degradation of toluene in flue gas by low temperature plasma catalysis[J]. China Environmental Science. 2020, 40(9): 3714-3720

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