Defluoridation of Drinking Water with Fixed Bed Column Using Low Cost Natural Adsorbent, Bauxite

Document Type : Research Note


Islamic Azad University, South Tehran Branch, Tehran, I.R. IRAN


Fluoride is a constituent of natural water. Generally groundwater has been considered as a safe and protected source of drinking water in the rural and developing cities, and little consideration was given to the risks of chemical pollution, particularly to the presence of elevated levels of fluoride, arsenic and nitrate in groundwater. In this study, absorption method of continuous state is used for defluoridation with the bauxite as an absorbent and the graph of equilibrium concentration divided by initial concentration is plotted against the time. This graph helps us to find out the break through the time during the operation of continuous absorption and then optimal data is obtained. Absorption data correlated with Langmuir and Freundlich models but the data fits better to Langmuir’s.


Main Subjects

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