Premium
Probing the Interaction between Fluoride and the Polysaccharides in Al(III)‐ and Zr (IV)‐Modified Tea Waste by Using Diverse Analytical Characterization Techniques
Author(s) -
Barathi Maniraj,
Kumar Alagarsamy Santhana Krishna,
Kodali Jagadeesh,
Mittal Shivam,
Samhith Guddati Dhruva,
Rajesh Nagarathnam
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701774
Subject(s) - thermogravimetric analysis , adsorption , fourier transform infrared spectroscopy , chemistry , fluoride , cellulose , nuclear chemistry , raman spectroscopy , inorganic chemistry , organic chemistry , chemical engineering , physics , optics , engineering
The objective of this study was to assess the efficacy of interaction between fluoride and a household tea waste (HTW) material modified using aluminium sulfate and zirconyl oxy chloride. Tea waste is an inexpensive source of biomass comprising lignin, cellulose and hemicelluloses, condensed tannins and proteins. The incorporation of Al (III) and Zr (IV) was accomplished by dilute nitric acid hydrolysis of the tea waste material. The polymeric aluminium and zirconium cations interact with tea waste through the surface hydroxyl, carbonyl, carboxylic functional groups and glycosidic linkages. Since, Al (III) and Zr (IV) ion are hard acids, they interact with the hard base fluoride effectively. The mechanism was supported through Thermogravimetric analysis (TGA), Fourier Transform Infra‐Red (FT‐IR) spectrometry, Fourier Transform Raman (FT‐Raman) spectrometry, Energy Dispersive X ray spectrometry (EDS), X‐ray Diffraction (XRD) and X‐ray Photo Electron Spectroscopy (XPS) techniques. Preliminary batch adsorption studies resulted in linear and nonlinear Langmuir adsorption capacities as 17.51 and 17.54 mg g −1 respectively at pH 7.0. The sustainable adsorbent shows prospective application for defluoridation of water.