AJAC  Vol.4 No.8 , August 2013
Application of Response Surface Methodology for Optimization of Fluoride Removal Mechanism by Newely Developed Biomaterial
Abstract: The adsorption capacities of new biomaterials derived from lemon leaf (Citrus sp.) toward fluoride ions have been explored by varying different physicochemical parameters such as pH, initial concentration, adsorbent dose, contact time, stirring rate and temperature. The entire study was done through batch process. Maximum fluoride adsorption of 96.9% - 98.8% was achieved with an initial concentration of 10 mg/L. Langmuir isotherm model well expressed fluoride ad- sorption onto LLD-1, LLD-2 and LLD-3. According to correlation coefficient, the fluoride adsorption onto these 3 ad- sorbents was correlated well with pseudo-second-order kinetic model. From thermodynamic study, the spontaneous nature and feasibility of the adsorption process with negative enthalpy (ΔH0) value also supported the exothermic nature were shown. The rate of fluoride adsorption was mathematically described as a function of experimental parameters and was modeled through Box-Behnken (Response surface methodology). The results showed that the responses of fluoride adsorption were significantly affected by the quadratic term of pH, initial concentration, contact time and temperature and the statistical analysis was performed by ANOVA which indicated good correlation of experimental parameters.
Cite this paper: R. Bhaumik, N. Mondal, S. Chattoraj and J. Datta, "Application of Response Surface Methodology for Optimization of Fluoride Removal Mechanism by Newely Developed Biomaterial," American Journal of Analytical Chemistry, Vol. 4 No. 8, 2013, pp. 404-419. doi: 10.4236/ajac.2013.48051.

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