Study on immobilization and migration of nuclide u in superficial soil of uranium tailings pond

International Symposium on Resource Exploration and Environmental Science

地球科学;生态环境科学

Chang, Zhe^1 ; Zhou, Shukui^1

School of Civil Engineering, University of South China, Hengyang, China^1

关键词: Ammonium phosphates;    Cumulative precipitation;    Different soils;    Rain leaching;    Re-precipitation;    Southern China;    Tailings pond;    Tailings soils;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/64/1/012021/pdf
DOI  :  10.1088/1755-1315/64/1/012021

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The uranium tailings in southern China was used as the object of study to study the fixation and migration characteristics of nuclide U in shallow tailings. The results showed that the precipitation of tailings in the tailings soil was not linearly related to the depth during the acid rain leaching process. Tailings soil in the role of fixatives, when the lime as a fixative, the tailings of different soil uranium in 20 days after the re-precipitation. However, when lime and ammonium phosphate were used as fixing agents, the cumulative precipitation of U had a significant effect, and the migration of uranium was inhibited.