Tian Xie, Tuantuan Liu, Bing Lian, Tianwei Qian, Chao Chen, Chenglong Xu, Pengliang Liang, Song Yang, Ruiqing Wang, Ke Chen, Aiming Zhang, Jun Zhu
The leaching process of uranium tailings is a typical water-rock interaction. The release of 226 Ra from uranium tailings depends on the nuclides outside the intrinsic properties of uranium tailings on the one hand, and is influenced by the water medium on the other. In this paper, a uranium tailings repository in southern China was used as a research object, and uranium tailings at different depths were collected by drilling samples and mixed to analyse the 226 Ra occurrence states. Static dissolution leaching experiments of 226 Ra under different pH conditions, solid-liquid ratio conditions, and ionic strength conditions were carried out, and the adsorption and desorption behaviours of 226 Ra in five representative stratigraphic media were investigated...
May 1, 2024: Environmental Pollution