A Review on the Applications of Nanoscale Zero Valent Iron (NZVI) in Removal of Environmental Pollutants

Pollution of surface waters by variety of pollutants and also limitation of available surface water sources have caused various and effective water treatment and reuse methods to develop. One of the methods recently studied in the treatment of polluted waters is based on the application of zero valent metals, especially zero valent iron (ZVI). In this method pollutants are removed through the reduction and adsorption mechanisms. In recent years, most of the studies in this area have focused on the application of nano zero valent iron (NZVI) because of their special properties in nano scale. Therefore in this article the applications of NZVI and also the impact of particle size reduction to nano scale in the removal of pollutants will be reviewed.