عنوان مقاله [English]
The aim of this study was to determine the effectiveness of phragmites australis nanostructured for removal of zinc and copper ions from aqueous solutions. Nanostructured phragmites australis was prepared for this purpose and effect of factors such as pH, contact time, initial concentration and adsorbent dosage on the removal of copper and zinc metals in a batch system check and adsorption isotherms and kinetics models were fitted and at the end zinc and copper ions desorbed by the adsorbent was investigated. To determine the absorption characteristics of the test SEM, PSA and FTIR was used. Manufactured by electronic microscopy imaging of nano-adsorbents showed that the percentages of %18.5 was nanoparticle and %81.5 was in the range of nanostructured particles. The results showed that the optimum pH value for both metals was 6, the contact time was 90 min, and initial concentration and adsorbent dosage were 10 ppm and 0.5 g. The Langmuir isotherm model for both zinc and copper ions with maximum R2 (0.98 and 0.99 respectively) and lowest RMSE (0.11 and 0.04 respectively) correlated with data. The kinetic model fitted the model Hoo for both zinc and copper ions with maximum R2 (0.99 and 0.98 respectively) and lowest RMSE (0.04 and 0.07 respectively) most consistent respectively. Desorption results showed that the metals desorption efficiency during 3 cycles for zinc and copper ions (%72 and %75 respectively) occurred in the first cycle.