纳米零价铁在石油污染场地中的应用研究

Research Progress in the Application of Nano Zero-valent Iron in the Remediation of Petroleum Contaminated Sites

近年来,纳米零价铁(nZVI)凭借其反应活性强等优势被广泛应用于石油污染场地修复研究。文章结合国内外研究情况,针对氯代烃污染物的修复机理作了阐述,分析了nZVI的制备方式、改性优化等方面内容,重点阐述了nZVI在原位修复过程中存在的典型问题及应用研究现状。电爆炸法作为一种低成本、可批量生产的方法,同时通过固体负载、表面修饰等改性手段开发新型nZVI材料,是nZVI工程应用的有效手段。鉴于nZVI及其改性材料具有成本低、扰动小、用途广等特点,该类材料在石油污染场地风险控制及修复治理中有较大的研究潜力与应用价值。

In recent years,nano zero-valent iron(nZVI)has been widely used in the remediation of petroleum contaminated sites due to its strong reactivity.Combined with domestic and international research,the article elaborates on the remediation mechanism of chlorinated hydrocarbon pollutants,analyzes the preparation method and modification optimization of nZVI,and focuses on the typical problems and the current status of application research of nZVI in the process of in-situ remediation.Electro-explosion method,as a low-cost and mass-producible method,as well as the development of new nZVI materials by means of solid loading,surface modification and other modification means,is an effective means for the engineering application of nZVI.Given that nZVI and its modified materials have the characteristics of low cost,small disturbance and wide application,such materials have greater research potential and application value in risk control and remediation and treatment of petroleum contaminated sites.