naa a22 4500 510749097 CHVBK 20180411083058.0 cr unu---uuuuu 180411e20130601xx s 000 0 eng 10.1007/s11270-013-1572-7 doi (NATIONALLICENCE)springer-10.1007/s11270-013-1572-7 Synthesis and Characterization of Alumina Impregnated Alginate Beads for Fluoride Removal from Potable Water [Elektronische Daten] [H. Basu, R. Singhal, M. Pimple, A. Reddy] The present study was conducted to study the feasibility of alumina impregnated calcium alginate beads to sorb the excess fluoride ions from the potable water. Numerous defluoridation techniques have been explored to remove excess fluoride ions from potable water, no single method has been found to be both effective and inexpensive enough to implement widely. During this work defluoridation was done using alumina impregnated calcium alginate beads without disturbing the drinking water qualities. The optimal condition for synthesis of calcium alginate alumina (Cal-Alg-Alu) beads is 2% (wt/vol) having 22% (wt/vol) alumina loading, stirring time: 1h, drying temperature: 60°C for 8h. The nature and morphology of pure and fluoride-sorbed calcium alginate alumina beads were characterized by scanning electron microscopy (SEM) with energy-dispersive X-ray spectroscopy (EDX), and attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) analysis. The results of batch sorption experiments suggest that Cal-Alg-Alu beads is very effective for defluoridation in the pH range of 3.5-9.0 and sorption is more than 99.9% in the concentration range of 1-100mgl−1. Equilibrium sorption follows Langmuir isotherms well and the maximum fluoride uptake calculated is 17.0mgg−1. The sorption kinetics can be explained by pseudo-second-order model well and the time needed for equilibrium is 300min. Springer Science+Business Media Dordrecht, 2013 Fluoride nationallicence ICP-OES nationallicence Adsorption isotherm nationallicence Alumina nationallicence Calcium alginate nationallicence Basu H. Analytical Chemistry Division, Mod-Labs, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut Singhal R. Analytical Chemistry Division, Mod-Labs, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut Pimple M. Analytical Chemistry Division, Mod-Labs, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut Reddy A. Analytical Chemistry Division, Mod-Labs, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut Water, Air, & Soil Pollution Springer Netherlands 224/6(2013-06-01), 1-12 0049-6979 224:6<1 2013 224 11270 https://doi.org/10.1007/s11270-013-1572-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11270-013-1572-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Basu H. Analytical Chemistry Division, Mod-Labs, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut NATIONALLICENCE 700 1- Singhal R. Analytical Chemistry Division, Mod-Labs, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut NATIONALLICENCE 700 1- Pimple M. Analytical Chemistry Division, Mod-Labs, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut NATIONALLICENCE 700 1- Reddy A. Analytical Chemistry Division, Mod-Labs, Bhabha Atomic Research Centre, Trombay, 400085, Mumbai, India aut NATIONALLICENCE 773 0- Water, Air, & Soil Pollution Springer Netherlands 224/6(2013-06-01), 1-12 0049-6979 224:6<1 2013 224 11270 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer