通过气溶胶分散技术将芬顿(Fenton)试剂引入气相反应体系来增强电晕放电对污染物甲苯的降解. 含Fe2+、Co2+和Mn2+等过渡金属离子的催化剂溶液以微液滴形式添加入反应器电晕区,考察了催化剂对甲苯蒸气降解速率的影响,发现甲苯平均降解速率均有显著提高. 在这三种金属离子溶液浓度均为0.05 mol/L, 电极气流量为0.6 m3/h和极间电压为23 kV时,甲苯(初始浓度为900 mg/m3)降解速率增强因子β分别为1.29, 1.28和1.51. 气相和液相中降解产物的分析表明,微液滴内发生的电Fenton反应将电晕放电产生的H2O2转化为具有更强氧化性的羟基自由基(HO*), 而甲苯的中间产物溶解在微液滴中,增强了甲苯的降解速率.
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