High-concentrated organic pollutants degradation by electrochemical ozidation integrated with diozygen activation
Electrochemical oxidation integrated with dioxygen activation for high-concentrated chlorophenol degradation was studied in an undivided electrochemical reactor. Dioxygen could be activated under the electrocatalysis to generate the stronger oxidants which promoted the contaminants degradation. The stronger oxidants produced were mainly hydrogen peroxide and the concentration was about 0.6 mmol L-1 when the current was 3.5 mA cm-2, sparged dioxygen rate was 0.05 m3 h-1.Synergetic effect was achieved in the combination process of electrochemical oxidation and dioxygen activation. The removal rate for 1000 mg L-1 4-chlorophenol by the combination process could reach 85％ under given operational condition, while it was only 50％ by the single electrocatalysis. Low pH was preferable to the removal of 4-chlorophenol. The mechanism of contaminants degradation and the possible reaction paths were given.
Electrocatalysis Diozygen activation Hydrozyl radical Hydrogen perozide Synergetic effect
Yanqing Cong Xiangjuan Ma Zucheng Wu
College of Environmental Science and Engineering Zhejiang Gongshang University Hangzhou 310012, Chin Department of Environmental Engineering Zhejiang University Hangzhou 310027, China
国际会议
上海
英文
3709-3712
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）