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Defluoridation/fluoride removal from water is achieved by fabricated chitosan doped graphite novel composite (FCDGNC). Biosorption is widely used due to economic, operative and maximum efficiency, more recyclable competence and ecological benign advantages. Many adsorbents reported for defluoridation below 2ppm had displayed low/moderate capacity besides, operated at drastic pH. So, batch de-fluoridation aimed to perform with respect to parameters like pH, dose, contact time and fluoride concentration. Water defluoridation was highly pH sensitive and found optimum pH=6.5 and sorption thermodynamics confirmed endothermic behavior besides chemi/physisorption. Kinetics followed pseudo 2ndorder while fluoride adsorption equilibrium wereanalyzed for Langmuir and Freundlich, models, but better suited to Langmuirwith adsorption capacity of 37.9mg/g. FCDGNC were regenerated and reuses better upon five defluoridation cycles to achieved fluoride stringent limit 1.5-2ppm without affecting quality of treated water. Thus, FCDGNC intended for efficient and most convenient way proposed further for large scale utility.

Biosorption of Fluoride from Water by Fabricated Chitosan Doped Graphite Novel Composite