Carbon Nanotubes Technology for Removal of Arsenic from Water

Authors

  • Esmaeil Ghahremani Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran.
  • Ahmad Reza Yari Research Center for Environmental Pollutants, Qom University of Medical Sciences, Qom, Iran; Department of Environmental Health Engineering, School of Public Health, Qom University of Medical Sciences, Qom, Iran.
  • Ali Naghizadeh Department of Environmental Health Engineering, School of Public Health, Birjand University of Medical Sciences, Birjand, Iran.
  • Elham Derakhshani Department of Environmental Health Engineering, School of Public Health, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
  • Hamid Reza Tashauoei Department of Environmental Health Engineering, School of Public Health, Islamic Azad University- Tehran Medical Branch, Tehran, Iran.
  • Hiva Daraei Environmental Health Research Center, Kurdistan University of Medical Sciences, Sanandaj, Iran.
  • Mokhtar Mahdavi Department of Environmental Health Engineering, School of Public Health, Isfahan University of Medical Sciences, Isfahan, Iran.
  • Pegah Bahmani Department of Environmental Health Research Center, Kurdistan University of Medical Sciences, and Rural Water and Wastewater Company, Kurdistan Province, Sanandaj, Iran.
  • Rahman Rahimi Rural Water and Wastewater Company, Kurdistan Province, 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.

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Journal title

volume 1  issue 1

pages  6- 11

publication date 2012-08

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