Abstract

In this study, a global waste was transformed a valuable and useful material by a comprehensive experimental setup. Lentil processing waste-based activated carbon with a high surface area of 1875 m2/g was synthesized by microwave-assisted K2CO3 chemical activation and then successfully converted into a ferrospinel composite. The synthesized ferrospinel composite was applied as an effective adsorbent material in the treatment of 2,4-dichlorphenoxyacetic acid herbicide bearing wastewater. Kinetic modeling of the experimental data obeyed the pseudo-second order model and the equilibrium studies well fitted to the Langmuir isotherm model. The maximum adsorption capacity of the ferrospinel composite towards 2,4-dichlorophenoxyacetic acid was 400 mg/g at 45 0C. Thermodynamic studies showed the favorability and spontaneity of the adsorption process.

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