Amin ansari - Department of chemistry, Islamic Azad University, Science and Research branch, Fars, Iran
Mehrorang Ghaedi - Department of Chemistry, Yasouj university, yasouj, iran

In this research zinc oxide nanoparticle loaded on activated carbon has been used as adsorbent for the removal and recovery of Malachite green from wastewater. The batch studies have been carried by observing the effects of pH, concentration of the dye, amount of adsorbents, of adsorbent, contact time etc. The results showed that as the amount of the adsorbent increased, the percentage of dye removal increased accordingly. Malachite green contents and its removal percentage were determined using a UV-Vis spectrophotometer before and after adsorption. The graphical correlation of various adsorption isotherm models like Langmuir, Freundlich, Tempkin have been carried out for this adsorbent. The kinetic studies suggest the process following pseudo second order kinetics and involvement of particle diffusion mechanism.

Malachite green, ZnO-AC-NP, Removal dye, wastewater