Removal of cyanide from aquatic solution by using of iron and copper powder: equilibrium and kinetic study

ABSTRACT

Industrial wastewater included the cyanide is one of the important sources of environmental pollution which founded in Industrial wastewater which are harmful for human health and environment. Therefore, the purpose of this research that was fundamental designed is investigation of Removal of cyanide from aquatic solution by using of iron and copper powder in experimental scale. At first, pilot was designed. Then, acquired pH optimum equal to 2,7 for copper and iron by variation pH= [2,4,6,8,12] and constant other parameters. The effect of initial cyanide concentration [40,60,80 mg/1], initial iron and copper dosage [0.08-1 g/100CC] and contact time [15-12 min] studied at the constant of optimum pH. The result showed removal efficiency Increased from 46.6% to 90.56% and 31% to 93.78% for copper and iron by increasing of contact time from 15 to 120 minute in constant conditions, respectively. Also result showed Removal efficiency decreased and increased by increasing initial cyanide concentration and initial iron and copper dosage. The results showed equilibrium data were explained acceptably by Langmuir isotherms and kinetic parameters were obtained by application of Langmuir and Hinshelwood equation. The results showed that removal of cyanide can be quick and effective done by iron and copper in experimental scale