修饰型纳米零价铁降解有机卤化物的研究

Degradation of Halogenated Organic Compounds by Modified Nano Zero-Valent Iron

纳米零价铁技术由于其独特的性质,已成为国内外研究的热点。对纳米零价铁进行改性,可有效提高其降解效率,解决纳米零价铁易团聚等问题,是解决卤代有机物污染问题行之有效的方法之一,特别适合于土壤和地下水的原位修复。本文从修饰型纳米零价铁的合成方法、制备原理、降解效果、应用范围、降解机理、修饰因素的影响等几方面进行了分析,着重介绍了国内外运用修饰型纳米零价铁降解卤代有机物的研究成果和现状,讨论分析了该技术存在的问题,并对该技术的发展前景进行了展望。

Nano zero-valent iron has become a hot research topic in the world for its unique advantages. Modify nano zero-valent iron ,which can effectively improve degradation efficiency for pollutants and control the problem of nanoparticles agglomerates, is one of the effective way to resolve the environment problem caused by the Halogenated organic compounds. It can be particularly used in situ remediation of groundwater and soil contaminated with halogenated organic compounds. In this paper, the preparation methods and applications of modified zero-valent iron nanoparticles are introduced. The capabilities and degradation mechanism of halogenated organic compounds as well as influencing factors are also discussed. The progress in degradation of halogenated organic compounds by modified nano zero-valent iron are illuminated emphatically. At last, future trends and the problems of this technology are prospected.