An Overview of New Methods for Removing Hexavalent Chromium from Industrial Wasrewater in the Last Decade

In this century water pollution has become a global issue. Heavy metals including Cr(VI) as common environmental contaminants, could be found in different industrial wastewater. Along with the expansion of industry and the increase in the contaminated wastewater, several methods have been proposed for removing contaminants from aquatic environment. Accordingly in this study various methods for the removal of Cr(VI) are presented and in some cases, the removal mechanism of Cr(VI) and the optimum conditions for the process are described. Also the advantages and disadvantages of each technique are presented. So this paper gives the reader a clear direction to find the most suitable separation method for a defined condition.