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Adsorption of fluoride from aqueous solution by alumina of alkoxide nature: Batch and continuous operation

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Title Adsorption of fluoride from aqueous solution by alumina of alkoxide nature: Batch and
continuous operation
 
Creator Kamble, Sanjay P
Deshpande, Gunavant
Barve, Prashant P
Rayalu, Sadhana
Labhsetwar, Nitin
Malyshew, Alexander
Kulkarni, Bhaskar D
 
Subject Materials Science
 
Description In this investigation, we report the adsorption potential of alkoxide origin alumina for defluoridation of
drinking water using batch and continuous mode of operations. The effects of different operating parameters
such as adsorbent dose, initial fluoride concentration, pH of the solution and interfering ions (usually present
in groundwater) were studied with a view to understand the adsorption behavior of the material under
various conditions. A thermodynamic study shows that the adsorption of fluoride by alkoxide origin alumina
is an exothermic and spontaneous process. The kinetic results showed that the fluoride sorption follows
pseudo-second-order kinetics. The applicability of adsorbent in the field is also tested through column
breakthrough studies. It has been observed that with an increase in the flow rate and initial fluoride
concentration, the breakthrough curve becomes sharper and the breakthrough time and adsorbed fluoride
ion concentration decrease. The breakthrough curve also becomes steeper as the bed height increases. The
alkoxide origin alumina based adsorbent media can be used directly for field applications since it is also
commercially available in granular form.
 
Publisher Elsevier
 
Date 2010
 
Type Article
PeerReviewed
 
Format application/pdf
 
Identifier http://neeri.csircentral.net/1015/1/kamble2010.pdf
Kamble, Sanjay P and Deshpande, Gunavant and Barve, Prashant P and Rayalu, Sadhana and Labhsetwar, Nitin and Malyshew, Alexander and Kulkarni, Bhaskar D (2010) Adsorption of fluoride from aqueous solution by alumina of alkoxide nature: Batch and continuous operation. Desalination, 264. pp. 15-23. ISSN 0011-9164
 
Relation https://www.journals.elsevier.com/desalination
http://neeri.csircentral.net/1015/