Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Study on Reactive Non-thermal Plasma Process combined with Metal Oxide Catalyst for Removal of Dilute Trichloroethylene

  • Han Sang-Bo (Power Facilities Diagnosis Group, Korea Electro-technology Research Institute) ;
  • Oda Tetsuji (Department of Electrical Engineering, The University of Tokyo) ;
  • Park Jae-Youn (Department of Electronic and Electrical Engineering, The University of Kyungnam) ;
  • Park Sang-Hyun (Department of Electronic and Electrical Engineering, The University of Kyungnam) ;
  • Koh Hee-Seok (Department of Electronic and Electrical Engineering, The University of Kyungnam)
  • Published : 2006.03.01
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Abstract

In order to improve energy efficiency in the dilute trichloroethylene removal using the nonthermal plasma process, the barrier discharge treatment combined with manganese dioxide was experimentally studied. Reaction kinetics in this process was studied on the basis of final byproducts distribution. Decomposition efficiency was improved to about $99\;\%$ at the specific energy of 40 J/L with passing through manganese dioxide. C=C ${\pi}$ bond cleavage of TCE substances gave DCAC, which has the single bond of C-C through oxidation reaction during the barrier discharge plasma treatment. Those DCAC were broken easily in the subsequent catalytic reaction due to the weak bonding energy about $3{\sim}4\;eV$ compared with the double bonding energy in TCE molecules. Oxidation byproducts of DCAC and TCAA from TCE decomposition are generated from the barrier discharge plasma treatment and catalytic surface chemical reaction, respectively. Complete oxidation of TCE into COx is required to about 400 J/L, but $CO_2$ selectivity remains about $60\;\%$.

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