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

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Abstract

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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Acknowledgements

This work was supported by the Nuclear Energy Development Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Science and ICT (2018M2B2B1065631).

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  1. Research Institute of Advanced Energy Technology, Kyungpook National University, 80 Daehak-Ro, Buk-Gu, Daegu, 702-701, Republic of Korea

    Bogyeong Park & Sang-June Choi

  2. School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University, 80 Daehak-Ro, Buk-Gu, Daegu, 702-701, Republic of Korea

    Min-Young Lee

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BP: Conceptualization, Methodology, Experiment, Writing – original draft. M-YL: Investigation, Experiment. S-JC: Supervision, Writing – review and editing. All authors have read and agreed to the published version of the manuscript.

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Correspondence to Sang-June Choi.

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Park, B., Lee, MY. & Choi, SJ. Selective removal of cesium by magnetic biochar functionalized with Prussian blue in aqueous solution. J Radioanal Nucl Chem 332, 3335–3348 (2023). https://doi.org/10.1007/s10967-023-08986-2

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