Ahmad Allah Abadi - Department of Environmental Health Engineering, Faculty of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran
Mohammad Hossien Saghi - Department of Environmental Health Engineering, Faculty of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran
Abolfazl Rahmani Sani - Department of Environmental Health Engineering, Faculty of Public Health, Sabzevar University of Medical Sciences, Sabzevar, Iran.
Hamideh Behrouzikhah - department of environmental engineering, graduate faculty of environment, Tehran university, Tehran, Iran

Background: One of the most important environmental pollutants that there is in sewage of different industrials is cyanide to cause pollution of water sources that are dangerous to humans and the environment. Cyanide can be removed in different ways from the aqueous media, but most of these methods are costly. Therefore, the aim of this study is the remove cyanide using iron nanoparticles. Material and Methods: Remove cyanide from aqueous media using iron nanoparticles in various conditions including the effect of the adsorbent, initial cyanide concentration, contact time and pH were studied in discontinuous phase. In this study, adsorption equilibrium and also the kinetics of the reaction examined. Results: In the process of sharing discontinuous, the balance was achieved after 120 minutes of contact time and maximum amount of removal cyanide in the pH 5 to 9 for cyanide concentration of 1 mg/L obtained. Also the results showed that the adsorption obeys Langmuir isotherm and kinetic of experiments obeys of secondary grade. Conclusion: According to the findings, iron nanoparticles can be used as a suitable option due to the substantial reduction of it’s to reduce the level of cyanide from aqueous media in areas where there is arsenic problem.

iron nanoparticles, cyanide, hazardous waste