Vol. 4, Issue 6 (2016)
Ultrasonication assisted studies of defluoridation from drinking water using aluminium hydroxide and its acetate derivatives
Author(s): Khichar M, Kumbhat S and Prakash A
Abstract: The batch adsorption studies were conducted to remove the fluoride from aqueous solutions using aluminium hydroxide (AHG) Aluminium hydroxide mono acetate (AHGMA) and Aluminium hydroxide di acetate (AHGDA) as adsorbents. Removal of fluoride was observed to be dependent on contact time, pH and adsorbent dose. The removal of fluoride was investigated at [F-] = 3ppm, pH 6.6 and contact time 5 minutes on ultra-sonic bath, using adsorbent dose 0.01 to 0.1g per litre. The ultrasonic bath assisted defluoridation takes much lesser time as compared to conventional stirring. The % fluoride removal was found maximum in the pH range 5.5-6.5. The experimental data fitted well in the Freundlich adsorption isotherm, the curves between log (x/m) against log Ce were found linear with a positive intercept on the ordinate. The value of adsorption capacity K and the intensity of adsorption n, have been reported. The uptake of fluoride was found rapid and proportionate in initial stages, decreases gradually while approaching equilibrium. The uptake of fluoride from its aqueous solution was found to be 17, 27 and 25 mg/g for AHG, AHGMA and AHGDA respectively.
How to cite this article:
Khichar M, Kumbhat S and Prakash A. Ultrasonication assisted studies of defluoridation from drinking water using aluminium hydroxide and its acetate derivatives. International Journal of Chemical Studies. 2016; 4(6): 44-50.