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零价铁类芬顿体系氧化降解有机物的研究进展
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Abstract:
地下水污染日益严重，探索适应地下水环境的高效污染去除技术迫在眉睫。纳米零价铁(nZVI)作为一种绿色原位降解污染物的新兴环境友好型材料，已被广泛的应用于有机氯化物、重金属、有机染料等污染物的去除。近年来，针对nZVI的不断研究发现其可构成类芬顿体系，可高效氧化降解有机污染物，使其降解为无毒无害的无机小分子。基于近年来零价铁构成类芬顿体系降解有机污染物的研究过程，介绍了ZVI/O2体系、ZVI/H2O2体系、以及nZVI/H2O2体系处理有机污染物的效果和机理，并对未来基于零价铁的类芬顿体系处理有机污染物的发展前景进行了展望。
Groundwater pollution is becoming more and more serious, so it is urgent to explore efficient pollution removal technology to adapt to groundwater environment. Nanoscale zero-valent iron (nZVI), as a new environmental friendly material for in-situ pollutants degradation, has been widely used in the removal of organic chlorides, heavy metals, organic dyes and other pollutants. In recent years, continuous research on nZVI has shown that it can form Fenton-like system, effi-ciently remove organic pollutants, and degrade into non-toxic and harmless inorganic small mo-lecules. Based on the development process of Fenton-like system composed of zero-valent iron for the degradation of organic pollutants, the effects and mechanisms of ZVI/O2 system, ZVI/H2O2 system and nZVI/H2O2 system for the treatment of organic pollutants are introduced, and the development prospect of Fenton-like system based on zero-valent iron for the treatment of organic pollutants in the future is prospected.
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