Abstract
A modification method of clay mineral surface was developed to improve its adsorption capacity of uranium. Uranium is a radionuclide with high toxicity and extremely long half-life, which can pollute the environment and endanger human health. This study proposes a new method of activation of clay mineral surface with phosphoric acid for rapid adsorption of uranium from aqueous solution. Compared with other modification methods, this method has the advantages of availability of raw materials, simple operation and good adsorption effects. It provides a cost-effective material to capture uranium ions from water. The essences of this new development are as following:• Activation and changes of clay minerals’ surface functionalities with the treatment of phosphoric acid• Controlled modifications of the surface properties of the clay towards the enhancement of U adsorption capacity• Rapid removal of uranium from water
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