纳米零价铁去除水中污染物的研究进展

Research of nano zero valent iron for the removal of pollutants from water

纳米零价铁(nano zero valent iron,nZVI)作为一种新型的纳米除污染材料,具有较大的比表面积和较高的反应活性,对水中污染物有很好的去除效果。综述nZVI在污水处理中的应用研究进展,重点讨论其在含重金属污水、有机污染废水、TNT红水等污水处理以及在抑菌方面的性能与反应机理。在除污染方面,nZVI显示出去除容量大、效率高的优势,应用前景极其广阔;如果能寻找到合适的载体或修饰材料来负载与保护nZVI,提高其在有氧环境中的稳定性,nZVI将在水处理中发挥更大的作用。

Nano zero valent iron （nZVI）with larger specific surface area and high reaction activity has been considered as a new nano pollution removing material ,w hich has the very good removal effect of pollutants in water .It presents the research progress in application of nZVI to the wastewater treatment .The properties and reactions mechanism for treating wastewater containing heavy metals ,organic wastewater , TNT red water ,and microbial pollutants are mainly discussed .The nZVI has already shown the advantages of large capacity ,high efficiency ,and wide application range for wastewater treatment .If we can find a suitable carrier or modified material to load or protect the nZVI ,the stability of nZVI in the oxygen environment must be improved ,which will realize a broader application of nZVI to the water treatment .