REMOVAL OF FLUORIDE FROM SYNTHETIC WASTE WATER BY USING “BIO-ADSORBENTS”

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Abstract

The aim of this research work is to design and develop a novel, cost effective strategy for fluoride removal from industrial waste water. This study investigates the feasibility of three low-cost biomass based adsorbents namely: banana peel, groundnut shell and sweet lemon peel for industrial waste water defluoridation at neutral PH range. Action of these adsorbents on fluoride was compared with commercially available adsorbents. It was found to be much better, high removal efficiency at higher concentration (20 mg/l) of fluoride in industrial waste water. The banana peel, groundnut shell and sweet lemon peel removed 94.34, 89.9 and 59.59 %respectively. Contact time for banana peel, groundnut shell, and sweet lemon peel are 60.0, 75.0, and 40 min respectively at doses of 14, 12 and 16 gm/l respectively. Mechanism of adsorption kinetics was found pseudo-second order reaction, and the mechanism of fluoride removal on adsorbents was found to be complex. The surface adsorption as well as intra-particle diffusion contributes to the rate-determining step.

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. A. (2014). REMOVAL OF FLUORIDE FROM SYNTHETIC WASTE WATER BY USING “BIO-ADSORBENTS.” International Journal of Research in Engineering and Technology, 03(04), 776–785. https://doi.org/10.15623/ijret.2014.0304137

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