Kinetics and Thermodynamics of Adsorption of Chromium (VI) on Starch Functionalized Iron Oxide Nanoparticles in Aqueous Medium

Author(s): Prakash N. Singh, Dhanesh Tiwary, Indrajit Sinha.

Journal Name: Innovations in Corrosion and Materials Science

Volume 5 , Issue 2 , 2015

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Graphical Abstract:


We investigated the kinetics and thermodynamics of adsorption of hexavalent chromium with different types of starch functionalized mixed phase iron oxide nanoparticles (previously reported in literature) as adsorbents. The data for kinetics of batch adsorption at the optimum pH was found to best fit the pseudo second order kinetics model. The activation energy of adsorption confirmed that the removal of Cr (VI) was by chemisorption on the SIONPs surfaces. On the other hand, experiments on the thermodynamics of adsorption showed that adsorption capacity for Cr (VI) increases with temperature.

Keywords: Adsorption activation energy, chromium, iron oxide nanoparticles, kinetics, starch, thermodynamics.

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Article Details

Year: 2015
Page: [98 - 104]
Pages: 7
DOI: 10.2174/235209490502151106165923
Price: $58

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PDF: 7