超声波/零价铁协同降解硝基苯的机理研究  

Mechanism of nitrobenzene degradation by ultrasound/zero-valent iron system

作　　者：李天鹏[1] 

机构地区：[1]浙江育英职业技术学院信息技术与应用系,杭州310018

出　　处：《工业用水与废水》2011年第3期28-31,共4页Industrial Water & Wastewater

摘　　要：对超声波/零价铁协同降解硝基苯的作用机理进行了研究。结果表明,超声波与零价铁联用时有明显的协同效应。超声辐照有利于铁屑转化为Fe2+,并进一步氧化为Fe3+,不规整铁屑对超声空化有促进作用,在超声波/零价铁体系中存在Fenton反应,通过产生大量的.OH降解硝基苯,该氧化过程是硝基苯降解的主要途径之一。The mechanism of nitrobenzene degradation by ultrasound/aero-valent iron system was studied.The results showed that,ultrasound and zero-valent iron had obvious synergistic effect when they were used combinedly.Ultrasound irradiation could help convert iron scrap into Fe2＋ and further oxidized it to Fe3＋,meanwhile,irregular iron scrap could promote ultrasonic cavitation.As Fenton reaction existed in the ultrasound/zero-valent iron system,large amount of ·OH was produced,which could degrade nitrobenzene.The above oxidation process was one of the main ways for nitrobenzene degradation.

关 键 词：超声波 铁屑 硝基苯 .OH 

分 类 号：X703.1[环境科学与工程—环境工程] O644-3[理学—物理化学]