International Journal of Applied Research
Vol. 3, Issue 3, Part M (2017)
Fluorosis survey and comparision of fluoride removing capacity from aqueous solution using low cost adsorbents
The present study is investigated to conduct the fluorosis survey among school children and to determine the cheap and better adsorbent for defluoridation by adsorption process. Dharmapuri district is the most fluoride affected areas in Tamilnadu. Therefore, we selected the survey among school children, age group between five and fourteen conducted in the Sunnampatti village of Dharmapuri district. The defluoridation process is conducted by two different adsorbents such as natural clay and brick powder. These adsorbents are powdered and preserved. The defluoridation process was examined using standard fluoride solution under different conditions viz., pH, Adsorbent Dose, Interaction duration and temperature. Before and after fluoride removal process, the physical attributes of natural clay adsorbent were studied under XRD and FT-IR spectrum. The results from the fluorosis survey among school children indicate that the 8 to 9 age group is the maximum extent for dental fluorosis. In defluoridation process, at low pH (pH=2) the maximum amount of fluoride is adsorbed by the natural clay (41%). The quantity of fluoride adsorption is nearly constant, when the quantity of the adsorbent material is 9g and it has rapidly reached equilibrium at 3:30 hours and high portion of fluoride was adsorbed. Generally fluoride adsorption increased from 30% to 40% with the maximum temperature 70 °C. The results indicated that the natural clay can be effective adsorbent for fluoride removal and it can be prepared simply, low-cost, effective and environmentally fit adsorbent of fluoride removal since aqueous solutions. We decided that clay is a potential defluoridating adsorbent than brick powder which can be applied in high fluoride contaminating water.
How to cite this article:
M Santhosh, K Vijai, S Manimegalai. Fluorosis survey and comparision of fluoride removing capacity from aqueous solution using low cost adsorbents. Int J Appl Res 2017;3(3):839-844.