Release behavior and mechanism of uranium and thorium from Ta-Nb tailings under simulated rainfall in Jiangxi Province, China

Wyzwania i możliwości odzysku w gospodarce odpadami podczas procesów wydobycia i wzbogacania rud zawierających uran i tor – przegląd

“…The specific chemicals or compounds found in U tailings can vary depending on the mining and processing methods used as well as the characteristics of the ore extraction (Tombal-kara 2020). However, some common chemicals and compounds that can be found in uranium waste are as follows (Al-Hashimi et al 2007;Carvalho et al 2005;Huang et al 2022):…”

In-situ stability assessment and remediation mechanism of typical antimony (Sb) tailings by combined organic-inorganic solid waste in Southwest China

“…During the mining process, a large amount of waste rock and tailings are generated, which occupies land resources, causes resource waste and safety hazards, and pollutes the environment. If solid wastes, such as tailings, are directly buried, radioactive elements, such as uranium and thorium, and some heavy metal elements are prone to oxidation and ion release under natural stress, including rain and sunlight (Geng et al, 2022), thereby affecting their bioaccumulation and biomagni cation, increasing the risk of toxic effects in ecosystems (Huang et al, 2022). In 2015, the collapse of tailings dams caused by large-scale iron ore processing and increased concentrations of particulate Fe, Pb, Cd, As, and dissolved Pb in the water of the Dorce River Estuary (Brazil) exposed local communities to the potential chronic non-carcinogenic effects of Cr (Mulholland et al, 2022;Nunes et al, 2022).…”