School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
School of Environmental and Municipal Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China; Shaanxi Key Laboratory of Environmental Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China.
Chemosphere. 2024 Aug;362:142762. doi: 10.1016/j.chemosphere.2024.142762. Epub 2024 Jul 4.
Microbial-induced calcium precipitation (MICP) refers to the formation of calcium precipitates induced by mineralization during microbial metabolism. MICP has been widely used as an ecologically sustainable method in environmental, geotechnical, and construction fields. This article reviews the removal mechanisms of MICP for different contaminants in the field of water treatment. The nucleation pathway is explained at both extracellular and intracellular levels, with a focus on evaluating the contribution of extracellular polymers to MICP. The types of mineralization and the regulatory role of enzyme genes in the MICP process are innovatively summarized. Based on this, the environmental significance of MICP is illustrated, and the application prospects of calcium precipitation products are discussed. The research hotspots and development trends of MICP are analyzed by bibliometric methods, and the challenges and future directions of MICP technology are identified. This review aims to provide a theoretical basis for further understanding of the MICP phenomenon in water treatment and the effective removal of multiple pollutants, which will help researchers to find the breakthroughs and innovations in the existing technologies, with a view to making significant progress in MICP technology.
微生物诱导碳酸钙沉淀（MICP）是指微生物代谢过程中矿化作用诱导的碳酸钙沉淀的形成。MICP 已被广泛应用于环境、岩土和建筑等领域的生态可持续方法。本文综述了水处理领域中 MICP 去除不同污染物的去除机制。从细胞外和细胞内两个层面解释了成核途径，重点评估了细胞外聚合物对 MICP 的贡献。创新性地总结了矿化类型和酶基因在 MICP 过程中的调控作用。在此基础上，阐述了 MICP 的环境意义，并讨论了钙沉淀产物的应用前景。通过文献计量学方法分析了 MICP 的研究热点和发展趋势，并确定了 MICP 技术面临的挑战和未来方向。本文旨在为进一步理解水处理中 MICP 现象和有效去除多种污染物提供理论基础，有助于研究人员在现有技术中找到突破和创新点，以期在 MICP 技术方面取得重大进展。
