Chair of Bioprocess Engineering, Technical University of Kaiserslautern, Gottlieb-Daimler Str. 49, 67663, Kaiserslautern, Germany.
World J Microbiol Biotechnol. 2022 Dec 28;39(2):61. doi: 10.1007/s11274-022-03499-8.
Microbiologically induced calcium carbonate precipitation (MICP) is a technique that has received a lot of attention in the field of geotechnology in the last decade. It has the potential to provide a sustainable and ecological alternative to conventional consolidation of minerals, for example by the use of cement. From a variety of microbiological metabolic pathways that can induce calcium carbonate (CaCO) precipitation, ureolysis has been established as the most commonly used method. To better understand the mechanisms of MICP and to develop new processes and optimize existing ones based on this understanding, ureolytic MICP is the subject of intensive research. The interplay of biological and civil engineering aspects shows how interdisciplinary research needs to be to advance the potential of this technology. This paper describes and critically discusses, based on current literature, the key influencing factors involved in the cementation of sand by ureolytic MICP. Due to the complexity of MICP, these factors often influence each other, making it essential for researchers from all disciplines to be aware of these factors and its interactions. Furthermore, this paper discusses the opportunities and challenges for future research in this area to provide impetus for studies that can further advance the understanding of MICP.
微生物诱导碳酸钙沉淀（MICP）技术是近十年来岩土工程领域备受关注的一项技术。它有可能为传统的矿物固结提供一种可持续的生态替代方法，例如使用水泥。在可以诱导碳酸钙（CaCO）沉淀的各种微生物代谢途径中，脲酶解已被确立为最常用的方法。为了更好地理解 MICP 的机制，并基于这种理解开发新的工艺和优化现有的工艺，脲酶解 MICP 是密集研究的主题。生物和土木工程方面的相互作用表明，需要进行跨学科研究才能推进这项技术的潜力。本文基于现有文献，描述并批判性地讨论了脲酶解 MICP 胶结砂的关键影响因素。由于 MICP 的复杂性，这些因素往往相互影响，因此来自所有学科的研究人员都必须意识到这些因素及其相互作用。此外，本文还讨论了该领域未来研究的机遇和挑战，为进一步推进 MICP 理解的研究提供动力。
