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IJCT Vol.13(4) [July 2006] >


Title: Study on defluoridation of drinking water by impregnation of metal ions in activated charcoal
Authors: Janardhana, C
Rao, G Nageswara
Sathish, R Sai
Lakshman, V Sai
Keywords: Activated coconut shell charcoal
Alum
Calcium oxide
Continuous flow method
Defluoridation
Zirconium oxychloride
Issue Date: Jul-2006
Publisher: CSIR
IPC CodeCO2F1/28, CO2F1/00
Abstract: Defluoridation of drinking water was carried out by the continuous down flow adsorption mode at room temperature. Five columns were prepared by the impregnation of ZrOCl2, CaO, Alum, CaCl2 and Borax in activated coconut shell charcoal. Known fluoride influent water was run into the column at a constant rate of 4.0 L/h and a constant level of water was maintained. Samples of the treated water were collected for analysis by the ion selective electrode method. In this study zirconium ion impregnated coconut shell charcoal (ZICSC) showed maximum fluoride uptake and proved to be the most effective defluoridating agent followed by CaO and Alum.
Page(s): 414-416
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.13(4) [July 2006]

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