alexa Abstract | A study on adsorption of chromium (VI) ions from aqueous solution by Ficus religiosa leaves as adsorbent

Der Chemica Sinica
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Adsorption is one of the effective techniques for Cr (VI) removal from industrial wastewater. The present work deals with the determination of Cr (VI) removal capacity from aqueous solution using Ficus religiosa leaves. The effect of various parameters such as pH, contact time, adsorbent dose, initial metal concentration and temperature was investigated. The maximum adsorption of Cr (VI) on leaves was obtained at pH 2. Langmuir, Freundlich and Temkin models were used to explain the equilibrium data. The adsorption data were well fitted to Langmuir adsorption model. The maximum adsorption capacity obtained using the Langmuir isotherm model is 18.18 mg/g. Results indicate the following order to fit the isotherms: Langmuir > Temkin > Freundlich. Adsorption kinetic data were modeled using the Pseudo first order, Pseudo second order and Elovich models. The kinetics of adsorption process was well described by the Pseudo second order kinetic model

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Author(s): R Gayathri M Thirumarimurugan and T Kannadasan


Adsorption, Chromium (VI), Ficus religiosa leaves, Isotherms, Kinetics, chemistry

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