Microbial induced calcite precipitation for improving low-cohesive soil: mechanisms, methods and macroscopic properties DOI Creative Commons
Zhengwei Liu,

Jianping Beng,

Yun Wu

et al.

Low-carbon Materials and Green Construction, Journal Year: 2024, Volume and Issue: 2(1)

Published: Dec. 29, 2024

Abstract Microbial-induced carbonate precipitation (MICP) has emerged as a promising eco-friendly and cost-effective alternative for improving the strength stability of low-cohesion soils. This review provides an in-depth analysis microscopic mechanisms, implementation methods, macroscopic properties MICP in soil enhancement. The biogeochemical processes underlying MICP, including urea hydrolysis, denitrification, sulfate reduction, photosynthesis, iron are discussed detail. Various such two-phase treatment, one-phase ex-situ mixing, reviewed, highlighting their respective advantages limitations reinforcing also addresses performance MICP-treated soils, improvements strength, stiffness, permeability, durability. Furthermore, key challenges future prospects microbial reinforcement technologies summarized. Future research should focus on optimizing nutrient supply, enhancing bacterial retention activity, controlling crystallization process, conducting pilot projects, reducing treatment costs. These efforts crucial advancing practical application sustainable infrastructure construction. aims to advance understanding its potential improvement, offering valuable insights geotechnical engineers.

Language: Английский

Overview of MICP Geotechnical Engineering Applications and Development Prospects DOI Creative Commons
Xiaoqiang Wang, Xiao Yuan

Journal of Research in Science and Engineering, Journal Year: 2025, Volume and Issue: 7(2), P. 17 - 22

Published: Feb. 27, 2025

This study examines the research directions and potential of geotechnical engineering applications utilizing MICP. Due to effective application this technology in various geological reconstruction projects, coupled with controllable universal microbial induction process, it serves as an alternative green a significant degree. Current indicates that urea hydrolysis reaction is extensively utilized due its high efficiency ease control, yet by-product ammonia may pose environmental pressures; meanwhile, sulfate reduction encounters issues related generation toxic gases. In comparison, although iron denitrifying bacteria are more environmentally friendly, there remains room for improvement sedimentation gas production control. At practical level, MICP has been employed soil remediation, reinforcement, pollution demonstrating notable value. However, technical challenges arise, including limited effects on fine-grained soil, discrepancies between laboratory outcomes actual adaptability, well difficulties stemming from complexity behavior. Nevertheless, holds achieving carbon peak goal, thanks friendliness, low energy consumption, efficiency. Through innovative approaches such multi-material composite improvement, adaptability effectiveness can be further enhanced. Future should integrate interdisciplinary strengths optimize bacterial selection process design, thereby promoting widespread engineering.

Language: Английский

Citations

0
Optimization of microbially induced carbonate precipitation by Sporosarcina pasteurii bacteria with response surface methodology DOI
Niloofar Raeisi, Hassan Sharafi, Ali Habibi

et al.

International Journal of Environmental Science and Technology, Journal Year: 2025, Volume and Issue: unknown

Published: April 8, 2025

Language: Английский

Citations

0
The Role of Microorganisms in Bio-cement Production: An Extended Review DOI Open Access

Yoseph Tegegn

Engineering and Applied Sciences, Journal Year: 2024, Volume and Issue: 9(6), P. 147 - 159

Published: Dec. 7, 2024

Bio-cement is an innovative material with the potential for replacement of conventional cement through microorganisms-influenced process. The major method uses bacterial, fungal, or algal activity to produce Microbial-Induced Calcium carbonate Precipitation (MICP). This review aims understand microbial aspect bio-cement production explaining process MICP that enhanced by ureolytic bacteria a focus on <i>Sporosarcina pasteurii</i> provide urease. has many environmental advantages such as lower CO<sub>2</sub> emission in comparison common and opportunities utilization waste products. In construction, it used self-healing concrete, crack repair, soil stabilization among others demonstrate its flexibility construction industry due available solutions structural geotechnical problems. also includes directions basic, applied, translational research, targeted genetic modifications performance, bio-cement, more effective strains, convergence 3D printing. Even though environmentally friendly approach stabilization, negative impacts surround environment, further research making bio-deteriorate energy efficient.

Language: Английский

Citations

0
Microbial induced calcite precipitation for improving low-cohesive soil: mechanisms, methods and macroscopic properties DOI Creative Commons
Zhengwei Liu,

Jianping Beng,

Yun Wu

et al.

Low-carbon Materials and Green Construction, Journal Year: 2024, Volume and Issue: 2(1)

Published: Dec. 29, 2024

Abstract Microbial-induced carbonate precipitation (MICP) has emerged as a promising eco-friendly and cost-effective alternative for improving the strength stability of low-cohesion soils. This review provides an in-depth analysis microscopic mechanisms, implementation methods, macroscopic properties MICP in soil enhancement. The biogeochemical processes underlying MICP, including urea hydrolysis, denitrification, sulfate reduction, photosynthesis, iron are discussed detail. Various such two-phase treatment, one-phase ex-situ mixing, reviewed, highlighting their respective advantages limitations reinforcing also addresses performance MICP-treated soils, improvements strength, stiffness, permeability, durability. Furthermore, key challenges future prospects microbial reinforcement technologies summarized. Future research should focus on optimizing nutrient supply, enhancing bacterial retention activity, controlling crystallization process, conducting pilot projects, reducing treatment costs. These efforts crucial advancing practical application sustainable infrastructure construction. aims to advance understanding its potential improvement, offering valuable insights geotechnical engineers.

Language: Английский

Citations

0