Indian Journal of Science and Technology
Year: 2012, Volume: 5, Issue: 3, Pages: 1-4
Gholam Ali Haghighat, Mohammad Hadi Dehghani*, Simin Nasseri, Amir Hossein Mahvi and Nooshin Rastkari
Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, *[email protected]
*Author For Correspondence
Mohammad Hadi Dehghani
Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences,
Eamil: [email protected]
Fluoride is a kind of anions, which makes its way to the water resources through diverse natural and human activities. Moreover, its health effects are so important and can vary based on the amounts of the intakes to the body. The aim of this study was to investigate fluoride removal efficiency of single and multi-wall carbon nanotubes (SWCNs & MWCNs) from water, and its comparison with the removal efficiency of two types of fine powder and 150 mesh activated alumina. Results show that, using SWCNs, the highest removal efficiency was achieved in pH=5 and sorbent concentration of 0.5 g/L. Moreover, with the increasing of pH the removal efficiency decreased. Meanwhile, fluoride removal efficiency increased with the increasing of the sorbent dosage and decreasing of the initial concentration of fluoride. In conclusion, the SWCNs had higher removal efficiency in comparison with the removal efficiency of both types of the activated alumina in optimum conditions.
Keywords: Fluoride, carbon nanotubes, activated alumina, water treatment
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