US EPA

6609801 

Journal Article 

Removal of Styrene Using Different Types of Non-Thermal Plasma Reactors 

Uck, PJ; Chan, CK; Ogata, A; Futamura, S; 김현하 

2005 

27 

2 

215-223 

KJD:ART001098636 

Non-thermal plasma decomposition of gas-phase styrene was investigated in this study using three different types of plasma reactors; dielectric-barrier discharge (DBD) reactor, surface discharge (SD) reactor and plasma-driven catalyst (PDC) reactor packed with 2.0 wt% Ag/TiO2 catalysts. The main parameters used for the comparative assessment of the plasma reactors include the decomposition efficiency, carbon balance, byproduct distribution, COx (CO + CO2) selectivity and COx yield.The SD and the DBD reactors showed better conversion efficiency of styrene than that of the PDC reactor due to their larger capability in ozone formation. On the other hand, the PDC reactor showed better carbon balance, the yield and the selectivity of COx. The required specific input energies to achieve 100% carbon balance from the decomposition of 100 ppmv styrene using the plasma alone reactors and the PDC reactor were 420 J/L and 110 J/L, respectively. The major decomposition products in gas-phase were CO, CO2 and HCOOH regardless of the types of plasma reactors. In the case of SD and DBD reactors, the CO2 selectivity ranged in 39.5∼60%. The CO2 selectivity in the PDC reactor was in range of 68.5∼75.5%