Inspired by microbial diagenesis and mounding, microbial mineralization technology has been widely used in the treatment of heavy metal and radionuclide contamination. S. pasteurii can decompose urea as a source of energy to produce CO₃²⁻ in the microbial mineralization system. Therefore, strontium-contaminated radioactive wastewater can be effectively treated by combining CO₃²⁻ with surrounding strontium ions (Sr²⁺) to form strontium carbonate (SrCO₃). Herein, we investigated how the concentration of graphene oxide (GO) and mineralization time influence the morphology of SrCO₃ and the mineralization efficiency. GO was used as a crystal regulator to solidify the radionuclide strontium in the microbial mineralization system to obtain large-scale rock-like SrCO₃ minerals. The results showed that GO can adsorb the surrounding Sr²⁺ with oxygen-containing functional groups on its surface to form SrCO₃ complexes, directly influencing the morphology and consolidation percentage of SrCO₃. Considering the leaching behaviour of nuclides, we further studied the stability of consolidated SrCO₃ minerals. The results indicated that the presence of GO improved the stability of the mineralized samples obtained in the microbial mineralization system.

受微生物成岩作用和堆积作用的启发，微生物矿化技术已被广泛用于重金属和放射性核素污染的处理。巴氏酵母可以分解尿素作为能源，在微生物矿化系统中产生CO ₃ ^2-。因此，通过将CO ₃ ^2-与周围的锶离子（Sr ²⁺）结合形成碳酸锶（SrCO ₃），可以有效地处理被锶污染的放射性废水。本文中，我们研究了氧化石墨烯（GO）的浓度和矿化时间如何影响SrCO ₃的形貌和矿化效率。GO被用作晶体调节剂，以固化微生物矿化系统中的放射性核锶，从而获得大规模的岩石状SrCO ₃矿物。结果表明，GO可吸附周围的Sr ²⁺与含氧的官能团在其表面上，以形成的SrCO _3种配合物，直接影响的SrCO的形态和合并百分比₃。考虑到核素的浸出行为，我们进一步研究了固结SrCO ₃矿物的稳定性。结果表明GO的存在改善了在微生物矿化系统中获得的矿化样品的稳定性。