Jagtap, Sneha and Yenkie, M K N and Labhsetwar, Nitin and Rayalu, Sadhana (2011) Defluoridation of drinking water using chitosan based mesoporous alumina. Microporous and Mesoporous Materials, 142. pp. 454-463. ISSN 1387-1811

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Abstract

In the present research study, mesoporous alumina (MA450) with improved properties has been synthesized using biopolymer chitosan as a template and used for defluoridation of water. The adsorbent has been characterized with XRD, SEM, FTIR and EDAX studies. It was observed that MA450 works effectively over wide range of pH and showed a maximum adsorption capacity 8.264 mg g�1 at initial fluoride concentration of 5 mg l�1 which is much better than the conventional alumina. The experimental data fitted well in Langmuir isotherm and follows Pseudo-second order kinetics. Batch adsorption studies were performed to study the effect of pH, adsorbent dose, initial fluoride concentration and co-existing anions. Thermodynamic study reveals that fluoride adsorption on MA450 is spontaneous and exothermic process. MA450 showed significantly high fluoride removal in field water. The performance of MA450 was compared with many other reported adsorbent for fluoride removal and it was observed that the present adsorbent is effective in terms of fluoride removal performance and also appears to be cost effective. From the experimental data, it may be inferred that MA450 is a potential and indigenous adsorbent for defluoridation.

Item Type:	Article
Uncontrolled Keywords:	Mesoporous Alumina; Defluoridation; Adsorption Isotherm; Fluoride Removal
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Nitin Labhasetwar
Date Deposited:	10 Jan 2018 05:05
Last Modified:	10 Jan 2018 05:05
URI:	http://neeri.csircentral.net/id/eprint/1031

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