作　　者： ; ;

机构地区： 广东纺织职业技术学院

出　　处： 《安全与环境工程》 2010年第4期13-16,共4页

摘　　要： 以苯胺为研究对象,通过试验对超声波/零价铁体系降解苯胺的过程与机理进行了研究,分别考察了零价铁投加量、废水初始pH值、废水初始浓度对苯胺污染物降解的影响规律,结果表明:超声波/零价铁体系适宜处理苯胺浓度较低的废水,零价铁的最佳投加量为2.8g/L,废水初始pH值的适宜范围为7～8;超声波/零价铁体系降解苯胺具有协同作用,对苯胺的降解以.OH自由基的氧化作用为主,其降解过程符合一级反应动力学规律;紫外可见光谱显示,苯胺在超声波/零价铁体系中发生了开环反应。 Degradation of aniline in water by the ultrasound/zero-valent iron system （US/Fe^0） was explored. The effect of Fe^0 dose,initial pH value and initial aniline concentration on the oxidation process and the degradation efficiency was studied. The results indicated that degradation efficiency was found to be the largest when Fe^0 was 2.8 g/L and initial pH Value was 7-8. The synergistic effects existed between ultrasound and Fe^0, the oxidation of hydroxyl radicals played a dominant role in the degradation process and the degradation of aniline by US/Fe^0 followed first-order kinetics. UV-Vis spectra showed that benzene ring of aniline had been destroyed during the reaction.

关 键 词： 超声波 零价铁体系 苯胺废水 降解 影响因素 机理

领　　域： [环境科学与工程]