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Vol. 32 No. 8 (2020): Vol 32 Issue 8, 2020

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Schiff Base Anchored with Silver Nanoparticles as Effective Adsorbent for Removal of Cadmium(II) Heavy Metal from Industrial Wastewater

https://doi.org/10.14233/ajchem.2020.22694
Preeti Sharma
Department of Chemistry, Faculty of science, S.P.C. Government College, Ajmer-305001, India
https://orcid.org/0000-0002-2256-5569
Vedula Uma
Department of Chemistry, Faculty of science, S.P.C. Government College, Ajmer-305001, India
https://orcid.org/0000-0003-3497-6653

Corresponding Author(s) : Vedula Uma

drvuma@gmail.com

Asian Journal of Chemistry, Vol. 32 No. 8 (2020): Vol 32 Issue 8, 2020

Abstract

The current study deals with the examination of the capacity of Schiff base anchored with silver nanoparticles for removal of cadmium(II) ions from industrial wastewater. Schiff base was  synthesized using refluxing of salicylaldehyde and 4-aminoantipyrine in alcoholic medium. The characterization of Schiff base were studied by elemental analysis, FTIR, NMR, UV-visible and  mass spectral studies. The silver nanoparticles were synthesized using the chemical reduction method and characterized. Then, silver nanoparticles anchored to the Schiff base by  suitable method and again characterized. Peanut shells were used as solid phase for removal of Cd(II) ions. The effects of several parameters to optimize the adsorption of Cd(II) ions on  solid phase, including pH, contact time, initial metal ion concentration and adsorbent weight were investigated. The maximum removal efficiency of Cd(II) ions on solid phase using Ag  nano@Schiff base was achieved under experimental conditions of pH 6 (% removal = 81%), contact time of 15 min (% removal = 93%), initial metal ion concentration of 0.5 ppm (% removal  = 95%) and adsorbent weight of 3 mg (% removal = 89%). The results showed that extraction of Cd2+ on AgNPs@Schiff base follows Freundlich adsorption isotherm.

Keywords

Heavy metal Schiff base Adsorption Silver nanoparticles
Sharma, P. ., & Uma, V. . (2020). Schiff Base Anchored with Silver Nanoparticles as Effective Adsorbent for Removal of Cadmium(II) Heavy Metal from Industrial Wastewater. Asian Journal of Chemistry, 32(8), 1941–1946. https://doi.org/10.14233/ajchem.2020.22694
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