Characteristics of back corona discharge in a honeycomb catalyst and its application for treatment of volatile organic compounds.
The main technical challenges for the treatment of volatile organic compounds (VOCs) with plasma-assisted catalysis in industrial applications are large volume plasma generation under atmospheric pressure, byproduct control, and aerosol collection. To solve these problems, a back corona discharge (BCD) configuration has been designed to evenly generate nonthermal plasma in a honeycomb catalyst. Voltage-current curves, discharge images, and emission spectra have been used to characterize the plasma. Grade particle collection results and flow field visualization in the discharge zones show not only that the particles can be collected efficiently, but also that the pressure drop of the catalyst layer is relatively low. A three-stage plasma-assisted catalysis system, comprising a dielectric barrier discharge (DBD) stage, BCD stage, and catalyst stage, was built to evaluate toluene treatment performance by BCD. The ozone analysis results indicate that BCD enhances the ozone decomposition by collecting aerosols and protecting the Ag-Mn-O catalyst downstream from aerosol contamination. The GC and FTIR results show that BCD contributes to toluene removal, especially when the specific energy input is low, and the total removal efficiency reaches almost 100%. Furthermore, this removal results in the emission of fewer byproducts.
†Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310007, People's Republic of China.|‡School of Chemistry and Environment, Jiaying University, Meizhou 514015, People's Republic of China.
Fada
F
Feng
†Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310007, People's Republic of China.
Yanyan
Y
Zheng
†Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310007, People's Republic of China.
Xinjun
X
Shen
†Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310007, People's Republic of China.
Qinzhen
Q
Zheng
†Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310007, People's Republic of China.
Shaolong
S
Dai
†Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310007, People's Republic of China.
Xuming
X
Zhang
†Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310007, People's Republic of China.
Yifan
Y
Huang
†Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310007, People's Republic of China.
Zhen
Z
Liu
†Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310007, People's Republic of China.
Keping
K
Yan
D002244:Carbon / Q000032:analysis; D002245:Carbon Dioxide / Q000032:analysis; D002248:Carbon Monoxide / Q000032:analysis; D002384:Catalysis; D004560:Electricity; D010126:Ozone / Q000737:chemistry; D058626:Plasma Gases / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D017550:Spectroscopy, Fourier Transform Infrared; D014050:Toluene / Q000302:isolation & purification; D055549:Volatile Organic Compounds / Q000032:analysis*
D058626:Plasma Gases; D055549:Volatile Organic Compounds; D002245:Carbon Dioxide; D014050:Toluene; D010126:Ozone; D002244:Carbon; D002248:Carbon Monoxide