Selective removal of cesium by magnetic biochar functionalized with Prussian blue in aqueous solution

초록

Magnetic biochar functionalized with Prussian blue (MBC-PB) was synthesized as an effective and economical adsorbent for removing cesium from aqueous solutions. Its physicochemical properties were characterized and cesium adsorption experiments were conducted. The cesium adsorption reaction was mainly physisorption and exothermic. MBC-PB had a maximum Cs capacity of 52.63 mg/g and adsorption equilibrium was reached within 1 h. Its removal efficiency was highest at pH 8 and it also effectively removed cesium coexisting with Na with a high distribution constant. These results suggest that MBC-PB has potential for use in actual Cs contaminated aqueous environments.

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