Removal of Fluoride from Aqueous Solution Using Chitosan-Iron Complex
- *Corresponding Author:
- Mishra PC
PG Department of Environmental Sciece
Fakir Mohan University
Balasore-756 020, Odisha, India.
E-mail: [email protected]
Received date: June 07, 2016; Accepted date: June 27, 2016; Published date: July 01, 2016
Citation: Patnaik S, Mishra PC, Nayak RN, Giri AK (2016) Removal of Fluoride from Aqueous Solution Using Chitosan-Iron Complex. J Anal Bioanal Tech 7:326. doi:10.4172/2155-9872.1000326
Copyright: © 2016 Patnaik S, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
In this study highly efficient sorbent, chitosan-Fe3+ complex with high chemical stability material was synthesized and the performance towards Fluoride adsorption was evaluated by batch experiments. The adsorption process reached equilibrium at 1 hour. The maximum adsorption capacity reached 2.34 mg/g of F- at an initial concentration of 50 mg/L of F- and adsorbent dosage of 10 g/L. Moreover, no significant change in the fluoride removal efficiency was observed in the pH range of 3.0-10.0. The adverse influence of sulphate on fluoride removal was the most significant, followed by bicarbonate and nitrate, whereas chloride had slightly adverse effect. Adsorption process followed the pseudo-second-order kinetic model, and the experimental equilibrium data were fitted well with the Langmuir-Freundlich and D-R isotherm models. Thermodynamic parameters revealed that fluoride adsorption was a spontaneous and exothermic process. The chitosan-Fe3+ complex could be effectively regenerated by NaCl solution.