Sorption of cesium on surrounding granite of Chinese low- and medium-level nuclear waste repository in the groundwater environment

The adsorption behavior and mechanism of Cs + on surrounding granite of nuclear waste repository under the groundwater environment were investigated by batch experiments and characterization methods. Results indicate that the adsorption under groundwater environment is inhibited for the presence of other ions, and the adsorbed Cs + by crushed granite are distributed in the area where K + is deficient, proving that Cs + can be captured by granite through ion exchange with K + . This study can provide a key reference for the safety assessment of the repository.