In addition, domestic and foreign scholars have studied the different systems and related mechanism of soil mineral-microbial interaction, involving the microbial adsorption process on the surface of minerals they also studied the relationship between mineral-microbial-soil contaminants.Īt present, there are many studies on the interaction between soil clay minerals and microorganisms, involving clay minerals including montmorillonite (MMT), bentonite, kaolin, hydrotalcite, and illite. published a review in the Journal of Nature Review on microbes, which systematically summarized the mechanism of interaction between minerals and microbes, focusing on two basic sciences of energy and extracellular electron transfer. In recent years, the interaction between soil minerals and microbes has become a hot topic in related disciplines. Microbial metabolic activities play an important role in the elemental cycling, formation, and transformation, as well as the weathering of the earth’s environment. Soil mineral-microbial interactions are the most basic biogeochemical effects. Microbial-induced mineralization mainly can be defined as the mineralization process caused by the interaction of microbial life activities with the surrounding environment. It has the ability to induce mineral deposition such as carbonic acid/phosphoric acid/sulphate. Microorganisms play an important role in the process of biomineralization, which is the largest and most widely distributed form of life on earth. Introductionīiomineralization refers to the process by which organisms produce inorganic minerals through the regulation of biological macromolecules. Therefore, it is reasonable and feasible to use the MMT to regulate the biocalcium carbonate cemented uranium tailings. When the amount of MMT is 6%, the maximum strength of the cement body reached 2.18 MPa, which increased by 47.66% compared with that the sample without MMT. In addition, MMT filling in the gap between the uranium tailings made the cement body more stable. What is more, MMT can balance the acidity and ions in the uranium tailings it also can reduce the toxicity of uranium ions on microorganisms. The results showed that MMT can regulate the crystal morphology of calcium carbonate. At the same time, we also studied the effect of carbonate mineralized cementation uranium tailings by controlling the amount of MMT. In this paper, we have studied the morphology of mineralized crystals by controlling the mineralization time and adding different concentrations of montmorillonite (MMT). By taking advantage of this process, contaminative uranium tailings can transform to solid cement, where calcium carbonate plays the role of a binder. Carbonate mineralization microbe is a microorganism capable of decomposing the substrate in the metabolic process to produce the carbonate, which then forms calcium carbonate with calcium ions.

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