Adsorption of Methyl Parathion from Aqueous Solutions Using Mango Kernels: Equilibrium,Kinetic and Thermodynamic Studies |
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| Authors: | G Zuhra Memon M I Bhanger Jamil R Memon Mubeena Akhtar |
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| Institution: | National Center of Excellence in Analytical Chemistry , University of Sindh , Jamshoro, Pakistan |
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| Abstract: | The adsorption of methyl parathion from aqueous solutions by the low-cost and abundant adsorbent mango kernel was studied in a batch adsorption system. The adsorption was studied as a function of pH, contact time, initial pesticide concentration, adsorbent dose, and temperature. A maximum adsorption of 98% ± 1% was achieved. Physicochemical characterization of the adsorbent was carried out by EDXRF, BET, and CHNS analysis. Freundlich, Langmuir, and Dubinin-Radushkevich isotherms were employed to evaluate the adsorption capacity of the adsorbent. Lagergren, Morris-Weber, and Reichenberg equations were employed to study the kinetics of the adsorption process. Thermodynamic parameters Δ H, Δ S, and Δ G were computed. The developed adsorption method was applied to real environmental samples. |
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| Keywords: | adsorption isotherms kinetics mango kernel methyl parathion thermodynamics |
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