Degradation of 4-Chlorophenol by High-Voltage Pulse Corona Discharges Combined with Ozone |
| |
Authors: | Wen Yuezhong Jiang Xuanzhen Liu Weiping |
| |
Affiliation: | (1) Institute of Environmental Science, Zhejiang University, Hangzhou, 310027 Zhejiang, P.R. China;(2) Department of Chemistry, Zhejiang University, Hangzhou, 310027 Zhejiang, P.R. China |
| |
Abstract: | Degradation of aqueous 250 mg/L 4-chlorophenol (4-CP) by high-voltage pulse corona discharges combined with ozone was investigated to gain insight into factors affecting enhancement of the combined system. High-voltage pulse corona discharges, ozonation, and a combination of the two were used to facilitate the degradation of aqueous 4-CP. Experimental results indicate that the treatment of 4-CP using a combination of high-voltage pulse corona discharges and ozonation within 30 min resulted in the almost degradation (96%) and a 51% reduction of the chemical oxygen demand (COD). This apparent synergistic effect may be attributed to the enhancement of ozone decomposition. The degradation of aqueous 4-CP by high-voltage pulse corona discharges combined with ozone was found to be affected by ozone concentration, substrate concentration, and interelectrode separations. The increase of ozone concentration leads to an increase of 4-CP conversion and COD removal. The conversion of 4-CP decreased with increase in 4-CP concentration and interelectrode separations. |
| |
Keywords: | Advanced oxidation process 4-chlorophenol degradation high-voltage pulsed corona discharges plasma ozone |
本文献已被 SpringerLink 等数据库收录! |
|