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Studies on synthesis, characterisation and effect of calcination on Mg-Al hydrotalcite for the removal of anionic species

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Title Studies on synthesis, characterisation and effect of calcination on Mg-Al hydrotalcite for the removal of anionic species
 
Creator Ahammed, Nishan V
Varghese, LityAlen
 
Subject Calcination
Effluent treatment
Hydrotalcite
Mg-Al LDH
 
Description 102-109
The use of Mg-Al Hydrotalcite for removing anionic contaminants such as Bromide, Sulphate, Nitrate, Fluoride and Chloride from aqueous solutions has been studied. The current study analyses the effect of calcination on the anionic removal efficiency of hydrotalcite. The hydrotalcite samples have been calcined batch-wise in a muffle furnace at different temperatures and are added to various anionic solutions in a conical flask and kept for stirring in a shaking incubator for three hours. The filtrate obtained is then analysed using Ion chromatography. The results obtained show a steady increase of anionic removal with an increase in calcination temperature. All anions under study show maximum removal towards calcinated samples than non-calcinated samples.For both calcinated and non- calcinated samples, it is found that the percentage removal of anions decreases with the increase of its ionic radii in the manner F->Cl->Br->NO3->SO42- which clearly states that calcination does not affect this behaviour and ionic radius is an influencing factor even without calcination.
 
Date 2021-03-16T10:39:07Z
2021-03-16T10:39:07Z
2021-01
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscair.res.in/handle/123456789/56526
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJCT Vol.28(1) [January 2021]