摘要
以对羟基苯甲酸乙酯(EP)为目标污染物,考察了US/nZVI/H2O2系统中有机物污染物的降解特性。以US(超声波)、H2O2、nZVI(纳米零价铁)分别或联合对EP进行试验,使用控制变量法,检测不同操作参数和不同的H2O2、nZVI的量对EP降解的影响。结果表明,US/nZVI/H2O2联合系统对EP的降解存在协同作用,说明在US/nZVI/H2O2体系中,同时存在超声波的空化作用和nZVI的还原作用,nZVI和H2O2的存在大大提高了体系中羟基自由基的生成效率。
Ethyl p-hydroxybenzoate (EP) was used as the target contaminant, and its degradation was analyzed by US/nZVI/H2O2 system. The effect of different operating parameters and different amounts of H2O2, nZVI on the degradation of EP was examined by a control variable method. US (ultrasonic), H2O2, and nZVI (nano-zero-valent iron) were tested on EP alone and in combination. The results showed that the US/nZVI/H2O2 combined system had a synergistic effect on the degradation of EP, indicated that in the US/nZVI/H2O2 system, there were ultrasonic cavitation and nZVI reduction simultaneously. The presence of nZVI and H2O2 greatly increased the efficiency of hydroxyl radical generation in this system. The possible degradation pathways of EP were analyzed on the basis of data comparisons and previous reports.
作者
吴绮薇
刘晨浩
杨培洁
WU Qiwei;LIU Chenhao;YANG Peijie(College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035,China)
出处
《化工技术与开发》
CAS
2019年第8期1-5,共5页
Technology & Development of Chemical Industry
基金
国家自然科学基金项目(21477088)
浙江省自然科学基金项目(LY17B070001)
