نوع مقاله : مقاله پژوهشی
1 دانشجوی کارشناسی ارشد آبیاری زهکشی دانشگاه شهید چمران اهواز
2 استادیار دانشکده مهندسی علوم آب دانشگاه شهید چمران اهواز
3 استاد دانشکده مهندسی علوم آب دانشگاه شهید چمران اهواز
4 4- استاد دانشکده علوم گروه شیمی دانشگاه شهید چمران اهواز
عنوان مقاله [English]
Existence of healthy water sources without poisonous and dangerous pollutant is a significant requirement for a healthy and sustainable society. It is well known that heavy metals such as cadmium and nickel in environment are a serious threat to plants, animals and human because of their bioaccumulation, nonbiodegradable property and toxicity even at low concentrations. This metals were entered from industrial wastes consume oil, urban waste water to environment. in this study, nano particle bagasse fly ash was used to removal of Cd(II) and Ni(II) from contaminated waters by batch adsorption experiments. First experiments related to pH were carried out on aqueous solution at the concentration 5 ppm, amount of adsorbent 10 g/L, contact time 12 hours with pH of the solution varying from 3 to 8. The pH0=6 was founded to be the optimum for the removal of Cd(II) and Ni(II) ions by BFA. The equilibrium time was determined to be 15 min for Cd(II) and Ni(II). The batch adsorption experiments were done at the lab temperature, optimal pH and equilibrium time. Adsorption efficiency were obtained at different initial concentrations (C0=2-20mg/l). The experimental adsorption data were fitted to the Langmuir, Freundlich, Redlich-Peterson(R-P) and Langmmuir-Freundlich isotherm models. The R-P model represent the equilibrium data better than other models.