Synergistic effects of hydrogen peroxide and phosphate on uranium(VI) immobilization: implications for the remediation of groundwater at decommissioned in situ leaching uranium mine
This study was supported by the National Natural Science Foundation of China (42207309, U1967210), the Natural Science Foundation of Hunan Province (2022JJ40369) and the University of South China Innovation Foundation (X202210555234).
机构署名：
本校为第一且通讯机构
院系归属：
核资源工程学院
摘要：
The processes of acid in situ leaching (ISL) uranium (U) mines cause the pollution of groundwater. Phosphate (PO(4)(3-)) has the potential to immobilize U in groundwater through forming highly insoluble phosphate minerals, but the performance is highly restricted by low pH and high sulfate concentration. In this study, hydrogen peroxide (H(2)O(2)) and PO(4)(3-) were synergistically used for immobilizing U based on the specific properties of groundwater from a decommissioned acid ISL U mine. The removal mechanisms of U and the stability of U on the formed minerals were elucidated by employing X...
