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Defluoridation of drinking water using chitosan based mesoporous alumina

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Title Defluoridation of drinking water using chitosan based mesoporous alumina
 
Creator Jagtap, Sneha
Yenkie, M K N
Labhsetwar, Nitin
Rayalu, Sadhana
 
Subject Materials Science
 
Description 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.
 
Publisher Elsevier
 
Date 2011
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1031/1/jagtap2011.pdf
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
 
Relation https://www.journals.elsevier.com/microporous-and-mesoporous-materials
http://neeri.csircentral.net/1031/