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Title: Biogenic nanozirconium in hydrogel beads for fluoride removal: equilibrium, thermodynamic and kinetic studies
Authors: Srivastava, Anushree
Kumari, Madhu
Prasad, Kumar Suranjit
Keywords: Fenugreek;Fluoride;Zirconium nanoparticles;SEM;FTIR;TEM
Issue Date: May-2020
Publisher: NISCAIR-CSIR, India
Abstract: In the present research work, removal of fluoride from aqueous solution using fenugreek leaf mediated Zr nanoparticle entrapped in calcium alginate beads has been attempted. The adsorption study for removal of fluoride from aqueous solution of defined concentrations has been carried out in batch mode followed by its estimation using ion-chromatography. Synthesized Zr nanoparticles are subjected to various analyses e.g. SEM, TEM, SAED EDAX and FTIR, revealing zirconium an integral component. The adsorption capacity of Zr entrapped calcium alginate beads for fluoride is found to be 90.90 mg/g. The Langmuir isotherm model best fits on equilibrium data since it provides higher R2 value than Freundlich model similarly, pseudo-second order kinetic model could better explain adsorption kinetic in comparison to pseudo first order model by presenting better correlation coefficient. The overall study suggests that Zr nanoparticles entrapped in alginate beads could be a better candidate for removal of fluoride from aqueous solution.
Page(s): 248-253
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.27(3) [May 2020]

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