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Magnetic Fe2O3/biochar composite prepared by hydrothermal method for Cu2+ removal in water
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Abstract
In this study, pureed water caltrop shell is used as the raw, and magnetic biochar composite is prepared by co-hydrothermal of water chestnut Trapa and FeCl3.6H2O. XRD, EDX, SEM, FT-IR, N2-isothermal adsorption and desorption, and scanning electron microscope (SEM) techniques showed the successful synthesis of Fe2O3/Biochar composite. Synthesizing the material by hydrothermal method created Fe2O3 to cover the biochar surface. The presence of Fe2O3 has significantly increased the surface area of the magnetic biochar material, which is conducive to the recycling of biochar. Cu2+ removal efficiency reached 89,96% at concentration of 50mg/L and pH 6. The Cu2+ adsorption process follows the Langmuir isotherm adsorption model and the second-order kinetic model. The results show that this low-cost magnetic biochar is capable of removing Cu2+ from aqueous solution quickly and effectively.
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Keywords
Cu2 , Fe2O3/biochar, magnetic biochar, water chestnut Trapa
References
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