Mohammad Mehdi Mehrabani Ardekani - Msc of Environment Engineering Head of Health, Safety & Environment Office Fars Industrial Estates Co. (Corresponding Author)
Roshanak Rezaei Kalantary - Department of Environmental Health, School of Health, Tehran University of Medical Sciences, Tehran, Iran.
Sahand Jorfi - Ph.D student of Environmental health Engineering, Tarbiat Modares University, Tehran, Iran.
Mohammad Nurisepehr - Department of Environmental Health Engineering, Alborz University of Medical Sciences, Karaj, Iran.

Fluoride is used widely in industries such as manufacture of semi-conductors, power plants, glass production and etc and released tothe environment via their effluents. The purpose of this sturdy was to compare the efficiency of low price adsorbents in fluoride removalfrom water. The optimum values of pH, contact time and adsorbent dosage were determined and different concentrations of fluoride wereexperimented in lab scale conditions for bagas, modified bagas and chitosan. Then Langmuir and Freundlich contacts were alsodetermined based on optimum conditions. The pH value of 7, contact time of 60 min and adsorbent dose of 2 g/L were determined asoptimum conditions for all three adsorbents. The most fluoride removal efficiency of 91% was obtained for modified bagas in optimumconditions. Based on data obtained in this study, it can be concluded that adsorption by modified bagas is an efficient and reliable methodfor fluoride removal from liquid solutions

Fluoride, Flourosis, Adsorption, Chitosan, Modified bagas