Uranium Bioremediation: Approaches and Challenges

Uranium Biomineralization with Phosphate—Biogeochemical Process and Its Application

“…Biogeochemical conditions control uranium biomineralization through pH or redox conditions, mineral surfaces, ligands for complexation, or microbial processes. 20 Further, uranium solubility and its interaction with phosphates in the groundwater were affected by pH, redox conditions, organic ligands, and carbonates. 47 In Table 3, the effects of controllable factors on biomineralization were included.…”

“…Uncontrollable factors of uranium biomineralization in contaminated sites may include the tolerance of microbes to high concentrations of coexisting metals, such as the transition metals. 20 Different microorganisms have various minimum inhibitory concentrations (MICs) on uranium. Rakshak et al reported that the MICs of Bacillus cereus and Arthrobacter mysorens isolated from the subsurface soils of U-rich deposits in Northeast India reached 4 mM, while the MICs of Bacillus thuringiensis and Arthrobacter ureafaciens were only 2 mM.…”

“…Uncontrollable factors of uranium biomineralization in contaminated sites may include the tolerance of microbes to high concentrations of coexisting metals, such as the transition metals . Different microorganisms have various minimum inhibitory concentrations (MICs) on uranium.…”

“…Biosorption is affected by the toxicity of high concentrations of heavy metals, and bioreduction is also affected by oxidation conditions. Few studies have shown that bioaccumulation was an effective in situ repair method. , In comparison to other bioremediation technologies, biomineralization is the least restricted. Biomineralization has the potential for both in situ and ex situ bioremedial treatment processes for solid and liquid wastes .…”