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Chitosan based mesoporous Ti–Al binary metal oxide supported beads for defluoridation of water

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Title Chitosan based mesoporous Ti–Al binary metal oxide supported beads for
defluoridation of water
 
Creator Thakare, Dilip
Jagtap, Sneha
Sakhare, Nikita
Labhsetwar, Nitin
Meshram, Siddharth
Rayalu, Sadhana
 
Subject Materials Science
 
Description In the present study, the performance of Ti–Al binary metal oxide supported beads using chitosan
template was studied for fluoride removal from drinking water. The adsorbent was synthesized by
precipitation method and characterized using FTIR, SEM, XRD and BET. The higher surface area of the
synthesized adsorbent 323.83m2/g results in a much higher fluoride removal capacity Qmax = 2.22mgg−1
as compared to bare chitosan. Pore size of beads is 42.97 Å, suggesting mesoporous nature of adsorbent.
Material works very effectively at all pH except at pH greater than 9. The presence of carbonate and bicarbonate
ions showed significant decline in the fluoride removal capacity of adsorbent. The experimental
data fitted well to Langmuir adsorption model. The kinetic studies indicate that the system follows the
pseudo-second-order and intra-particle diffusion model. Thermodynamic study reveals that the fluoride
adsorption by Ti–Al binary metal oxide supported beads is an exothermic and spontaneous process.
Alum appears to be the promising regeneration media showing 80% regeneration. The applicability of
the adsorbent for fluoride removal was tested in field water collected from the Dhar district in Madhaya
Pradesh, India.
 
Publisher Elsevier
 
Date 2010-01
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1019/1/thakre2010%281%29.pdf
Thakare, Dilip and Jagtap, Sneha and Sakhare, Nikita and Labhsetwar, Nitin and Meshram, Siddharth and Rayalu, Sadhana (2010) Chitosan based mesoporous Ti–Al binary metal oxide supported beads for defluoridation of water. Chemical Engineering Journal, 158. pp. 315-324. ISSN 1385-8947
 
Relation https://www.journals.elsevier.com/chemical-engineering-journal
http://neeri.csircentral.net/1019/