Reactive Transport of U and V from Abandoned Uranium Mine Wastes

This study investigates the reactive transport mechanisms of uranium (U) and vanadium (V) derived from abandoned uranium mine wastes, which pose significant environmental risks. The objective is to understand the mobility and behavior of these metals in soil and water systems, and to assess the potential impacts on surrounding ecosystems. Utilizing a combination of field sampling and laboratory experiments, including acid extractable procedures, inductively coupled plasma (ICP) analysis, and advanced modeling techniques with PFLOTRAN, we analyze the transport processes under varying environmental conditions. The results indicate that both U and V exhibit distinct mobility patterns, influenced by interaction with soil matrices and groundwater compositions. Notably, we documented the formation of complex mineral phases that alter the solubility and reactivity of U and V. The findings underscore the importance of understanding geochemical interactions in remediation efforts and risk assessments for contaminated sites. This work contributes valuable insights into the environmental fate of heavy metals from mining activities and highlights the need for effective management strategies to mitigate potential risks.