Acid in–situ leaching (AISL) mining is used to recover uranium from sandstone using
sulphuric acid. However, the evolution of groundwater hydrochemistry, the water–rock …

Oxidative weathering of pyrite, a widespread iron sulfide mineral, is crucial for the uranium
mineralization in sandstone-hosted uranium deposits and the ore utilization leaching under …

More than 60% of worldwide uranium production is based on the In Situ Recovery mining
technique. This exploitation method directly falls within the scope of the applications of …

Reactive transport modeling has become widely used to help improve understanding of
hydrogeochemical processes from the pore scale to the watershed scale. In recent years …

The Abinky formation, composed of analcimolites (ie, rocks with< 70 wt% analcime),
underlies Tchirezrine II, which hosts the Imouraren (Niger) uranium deposit. A potential …

Sandstone-hosted uranium is mined in the Sahel regions of Niger. The Teloua aquifer is
located beneath the ore-processing facilities of one such former mine, COMINAK. The pores …

A series of laboratory experiments are conducted to simulate the acidification and
subsequent recovery of a sand aquifer exploited by in situ recovery (ISR) mining. A sulfuric …

The long-term management of tailings from former uranium (U) mines requires an in-depth
understanding of the hydrogeological processes and water flow paths. In France, most of the …

Uranium represents one of the most radioactive and toxic metals. A systematic study of UO 2
2+ adsorption by clay minerals is conducted using molecular dynamics, especially from …

Porosity, tortuosity, specific surface area (SSA), and permeability are four key parameters of
reactive transport modeling in sandstone, which are important for understanding solute …