The efficient removal of radioactive cesium (137Cs) from contaminated water around nuclear plants and/or after nuclear accidents has become an emerging issue since the Fukushima Daiichi Nuclear Power Plant (Fukushima, Japan) disaster on March 11, 2011. Herein, we have demonstrated and compared the adsorption performances of both 137Cs and 133Cs using three potential adsorbents, zeolite (ZL), Prussian blue (PB) and graphene oxide (GO), in deionized water and simulated seawater. The adsorption efficiencies are determined in terms of the adsorbent amount, initial Cs concentration, and the effect of other competing ions in the system. In addition, the practical application of the materials was justified by evaluating the elution/retention of the adsorbed Cs with different volumes of solvent. Significantly, we illustrated a practical validation of a purification route for 137Cs-contaminated fly ash generated from nuclear power plant accidents, while PB can be a potential adsorbent for large-scale implementation.
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