School of Hydrology and Water Resources, Nanjing University of Information Science and Technology, Nanjing, 210044, China.
College of New Energy and Environment, Jilin University, Changchun, 130021, China.
Chemosphere. 2023 Mar;318:137894. doi: 10.1016/j.chemosphere.2023.137894. Epub 2023 Jan 16.
The occurrence of imbalanced heavy metals concentration due to anthropogenic hindrances in the aquatic and terrestrial environment has become a potential risk to life after circulating through different food chains. The microbial-induced carbonate precipitation (MICP) method has gradually received great attention from global researchers but the underlying mechanism of heavy metal mineralization is not well-understood and challenging, limiting the applications in wastewater engineering. This paper reviews the metabolic pathways, mechanisms, operational factors, and mathematical/modeling approaches in the MICP process. Subsequently, the recent advancement in MICP for the remediation of heavy metal pollution is being discussed. In the follow-up, the key challenges and prospective associated with technical bottlenecks of MICP method are elaborated. The prospective study reveals that MICP technology could be efficiently used to remediate heavy metal contaminants from the natural environment in a cost-effective way and has the potential to improve soil properties while remediating heavy metal contaminated soil.
由于人为干扰在水和陆地环境中导致的重金属浓度失衡，通过不同的食物链循环后，对生命造成潜在的威胁。微生物诱导碳酸钙沉淀（MICP）方法逐渐受到全球研究人员的关注，但重金属矿化的潜在机制尚不清楚，具有一定的挑战性，这限制了其在废水工程中的应用。本文综述了 MICP 过程中的代谢途径、机制、操作因素和数学/建模方法。随后，讨论了 MICP 在重金属污染修复方面的最新进展。接下来，详细阐述了 MICP 方法的技术瓶颈所面临的关键挑战和未来发展方向。前瞻性研究表明，MICP 技术可以有效地用于以具有成本效益的方式从自然环境中修复重金属污染物，并且有可能在修复重金属污染土壤的同时改善土壤性质。
