Kinetics and Thermodynamics of Adsorption of Cr(VI) on Nano Magnetic NiFe Particles in an Aqueous Solution

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Abstract:

Magnetic nano materials were known as high adsorption properties Nano-structural Ni2.33Fe alloy was successfully prepared by hydrothermal method and was used to remove CrO42- ions from aqueous solution. The results show that the equilibrium adsorption quantity increased with the increase of initial CrO42- concentration and pseudo-second-order kinetic models were successfully used for fitting the kinetic data. Webb Maurice diffusion model shows adsorption was controlled by external mass transfer followed by internal particle diffusion mass transfer. And the fitting degree of the Langmuir isotherm and the experimental data was quite high. And the Freundlich isotherm also fitted well.

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Advanced Materials Research (Volumes 1120-1121)

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286-290

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July 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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