Abstract:
A large amount of uranium-containing wastewater was produced with the development and application of nuclear energy. Adsorption method has received increasing attention due to the rapid development of new adsorptive materials. The adsorption method is widely used for concentrating uranium in wastewater. The adsorbents used for the adsorption of uranium from wastewater include inorganic minerals, metal oxide and carbon-based materials (such as activated carbon, carbon nanotube and graphene) and so on. The modification of adsorbents by grafting O- or N-containing functional groups, cross-liking, plasma, ion imprint and composite can enhance the adsorption capacity and selectivity. The mechanism for uranium adsorption is ion exchange and surface complexation. In this paper the research advances in uranium adsorption from wastewater are reviewed, and the future research direction is proposed based on the analysis of the present references.