Author/Authors :
Naghizadeh، Ali نويسنده Department of Environmental Health Engineering, School of Public Health, Birjand University of Medical Sciences, Birjand, Iran , , Yari، Ahmad Reza نويسنده Department of Environmental Health Engineering, School of Public Health, Qom University of Medical Sciences, Qom, Iran , , Tashauoei، Hamid Reza نويسنده Department of Environmental Health Engineering, School of Public Health, Islamic Azad University-Tehran Medical Branch, Tehran, Iran , , Mahdavi، Mokhtar نويسنده Isfahan University of Medical Sciences , , Derakhshani، Elham نويسنده Shahid Beheshti University of Medical Sciences , , Bahmani، Pegah نويسنده Kurdistan Rural Water and Wastewater Company, Sanandaj, Iran , , Daraei، Hiva نويسنده Kurdistan University of Medical Sciences , , Ghahremani، Esmaeil نويسنده Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran ,
Abstract :
Aims of the Study: This study was aimed to investigate the adsorption mechanism of the arsenic removal from water by using carbon nanotubes in continuous adsorption column.
Materials & Methods: Independent variables including carbon nanotubes dosage, contact time and breakthrough point were carried out to determine the influence of these parameters on the adsorption capacity of the arsenic from water.
Results: Adsorption capacities of single wall and multiwall carbon nanotubes were about 148 mg/g and 95 mg/g respectively. The experimental data were analyzed using Langmuir and Freundlich isotherm models and equilibrium data indicate the best fit obtained with Langmuir isotherm model.
Conclusions: Carbon nanotubes can be considered as a promising adsorbent for the removal of arsenic from large volume of aqueous solutions.
