Article
Soil Science
Hao Meng, Yufeng Gao, Jia He, Yongshuai Qi, Lei Hang
Summary: This study explored the potential of MICP in reducing wind erosion of desert soil. The optimal cementation solution concentration and spraying volume were found to be 0.2 M and 4 L/m2, respectively. The results demonstrated that MICP significantly enhanced the soil bearing capacity and wind erosion resistance, with the sandy land showing maximum soil bearing capacity within three days and minimal wind erosion after 30 days.
Article
Engineering, Geological
Monika Dagliya, Neelima Satyam, Meghna Sharma, Ankit Garg
Summary: Wind erosion is a significant natural calamity worldwide. This study evaluates the feasibility of using microbially induced calcium carbonate precipitation to mitigate wind-induced erosion in the Thar desert of India. The results show that the biocemented sand samples are more resistant to erosion compared to untreated sand, and longer treatment duration leads to thicker crust and higher surface strength.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Yilong Li, Qiang Xu, Yujie Li, Yuanbei Li, Cong Liu
Summary: This study investigates the wave erosion resistance of sandy slopes treated with microbial-induced calcium carbonate precipitation (MICP). The results show that MICP treatment significantly improves the erosion resistance and penetration resistance of the slopes. The calcium carbonate content on the slope surface is also increased.
Article
Engineering, Geological
Hao Meng, Shuang Shu, Yufeng Gao, Jia He, Yukuai Wan
Summary: Kitchen waste was used for Sporosarcina pasteurii cultivation and in wind erosion control of desert soil through MICP. After optimization, the kitchen waste-based medium showed comparable results to conventional media, demonstrating the potential for large-scale applications in wind erosion control. Scanning electron microscopy confirmed the bridge effect of calcium carbonate crystals in the soil matrix, indicating the effectiveness of using kitchen waste as a cost-effective alternative nutrient.
Article
Engineering, Geological
Yang Yang, Yang Xiao, Liang Cheng, Mohamed A. Shahin, Hanlong Liu
Summary: This paper introduces a new method to maximize the retention of bacteria in porous media by using an in situ biomass flocculation technique, resulting in a homogeneous distribution of bacteria activity. The method has been tested and successfully achieved homogenous distribution of urease activity, produced CaCO3 content, and compressive strength. This method is significant for improving soil performance and ensuring uniform construction effect.
Article
Construction & Building Technology
Xiaohao Sun, Linchang Miao, Linyu Wu, Hengxing Wang
Summary: This study developed a theoretical calculation model with microbially induced carbonate precipitation (MICP) to repair concrete cracks. The research found that the concentration of suspended biomass in cracks gradually decreased during the tests, while biofilm and solute concentrations were larger at the inlet, resulting in an increase in productive rates for CaCO3, indicating better repair effects. The proposed mathematical model represents a platform technology that utilizes microbial metabolism and repair period to impart novel multifunctionality to structural materials.
CEMENT & CONCRETE COMPOSITES
(2021)
Article
Engineering, Geological
Hai-Lei Kou, Jia-Hui Liu, Peng Zhang, Chuangzhou Wu, Pengpeng Ni, Dong Wang
Summary: The study utilized recycled shredded coconut coir (RSC) to enhance the erosion resistance of treated calcareous sandy slopes, showing that the addition of RSC can promote MICP treatment and reduce treatment cycles. Penetration testing can be used to evaluate the erosion resistance of bio-cemented slopes, showing a nonlinear relationship with erosion resistance.
Article
Engineering, Environmental
Chunying Feng, Shufeng Zhao, Yiwu Zong, Qing He, William Winarto, Wenchao Zhang, Andrew S. Utada, Kun Zhao
Summary: This study investigates the dynamics of amorphous calcium carbonate (ACC) during microbially induced calcium carbonate precipitation (MICP) using microscopy and Raman microspectroscopy. It reveals that the MICP process inside droplets can be divided into three stages: liquid, gel-like ACC, and precipitated CaCO3 stages. The formation and dissolution of gel-like ACC structures and their mechanical properties are observed and analyzed. The size, morphology, and lifetime of the gel-like structures depend on the concentration of Ca2+.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Review
Biotechnology & Applied Microbiology
Michael S. Carter, Matthew J. Tuttle, Joshua A. Mancini, Rhett Martineau, Chia-Suei Hung, Maneesh K. Gupta
Summary: The production of traditional concrete requires a significant amount of energy and contributes to a large portion of annual CO2 emissions. Biocement, a building material that utilizes biological structures to bind particles, has the potential to compete with traditional concrete as a more environmentally friendly alternative. This review synthesizes evidence from materials science, microbiology, biochemistry, and cell biology to provide a model for the process of biocement production and suggest areas for further research.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2023)
Article
Engineering, Environmental
Zhao Wang, Junfeng Su, Xiaofen Hu, Amjad Ali, Zizhen Wu
Summary: The biosynthetic crystals (BC) prepared through microbially induced calcium carbonate precipitation (MICP) showed high efficiency in fluoride removal from groundwater, making it suitable for engineering applications.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Maolin Wang, Shijun Wu, Jianan Guo, Zisheng Liao, Yongqiang Yang, Fanrong Chen, Runliang Zhu
Summary: Coprecipitation of calcium carbonate (CaCO3) can reduce the bioavailability of arsenic (As), but in a phosphate-rich environment, some CaCO3 will convert to hydroxylapatite (HAP). The behavior of carbonate-bound As during conversion remains unclear. High concentrations of arsenate promote the conversion of CaCO3 to HAP, with HAP structure favoring the incorporation of arsenate.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Engineering, Environmental
Xiaohao Sun, Linchang Miao, Hengxing Wang, Runfa Chen, Xin Guo
Summary: Bio-cementation using MICP was applied to solidify loess soils, with a focus on durability under freeze-thaw cycles. Results showed decreased permeability coefficients after solidification, with better aggregate effect and freeze-thaw resistance at a density of 1.5 g/cm(3).
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2021)
Article
Environmental Sciences
Xiaohao Sun, Linchang Miao, Hengxing Wang, Runfa Chen, Linyu Wu
Summary: This study investigated the effects of microbially induced calcite precipitation (MICP) on improving the surface erosion resistance of loess slopes. Polyvinyl acetate (PVAc) was added to the cementation solution to increase slope stability. The results showed that MICP treatment improved erosion resistance and achieved the best erosion control and surface strength with certain bacterial suspension and cementation solution. However, the eroded loss weight of MICP-treated slopes in rainfall simulation experiment remained large. Adding PVAc to the cementation solution significantly increased slope stability and reduced soil loss after rainfall erosion, attributing to the network structure and the stronger resistance of PVAc. These results suggest that MICP-PVAc treatment can mitigate surface erosion of loess slopes.
JOURNAL OF SOILS AND SEDIMENTS
(2022)
Article
Engineering, Geological
Xiaohao Sun, Linchang Miao, Runfa Chen, Hengxing Wang, Linyu Wu
Summary: This study revised the transport model of biomass and obtained a new urea hydrolysis equation for the solidification of loess using microbially induced carbonate precipitation (MICP) technique. The revised theoretical model allowed for the calculation of biomass distribution, calcium carbonate content and distribution, and porosity of solidified loess. The results were consistent with experimental measurements, demonstrating the feasibility and practicability of the proposed model. Rating: 7/10.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2023)
Article
Engineering, Geological
Xiaohao Sun, Linchang Miao, Hengxing Wang, Linyu Wu, Guangcai Fan, Jinxin Xia
Summary: This study proposes a microbiota and enzyme mix-induced carbonate precipitation (MEMCP) method to improve the stability of foreshore slopes and mitigate erosion. The results show that the slopes treated with MEMCP have significantly improved stability, higher surface strengths, and CaCO3 contents.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2022)
Article
Engineering, Geological
B. M. Montoya, J. T. DeJong
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2015)
Article
Engineering, Geological
K. Feng, B. M. Montoya
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2016)
Article
Engineering, Geological
A. Zamani, B. M. Montoya
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2018)
Article
Engineering, Geological
B. M. Montoya, J. T. Dejong, R. W. Boulanger
Article
Engineering, Geological
Shahin Safavizadeh, Brina M. Montoya, Mohammed A. Gabr
Article
Biotechnology & Applied Microbiology
B. M. Mortensen, M. J. Haber, J. T. DeJong, L. F. Caslake, D. C. Nelson
JOURNAL OF APPLIED MICROBIOLOGY
(2011)
Article
Engineering, Geological
Atefeh Zamani, Brina M. Montoya
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
(2019)
Editorial Material
Engineering, Geological
Qianwen Liu, Brina M. Montoya
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2021)
Article
Engineering, Geological
Brina M. Montoya, Jinung Do, Mohammed A. Gabr
Summary: Microbially induced carbonate precipitation (MICP) is an innovative method to strengthen loose porous media. This study investigates the distribution pattern of cementation and quantifies the improved material properties through experimental study, identifying the level of cementation induced in the treated sand and its relationship to shear wave velocity and cone tip resistance. The results provide insights into the general cementation pattern of MICP and how it is influenced by induced seepage velocity and density.
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2021)
Article
Engineering, Environmental
Pegah Ghasemi, Brina M. Montoya
Summary: This study is the first attempt to investigate the interaction between the Microbially Induced Carbonate Precipitation (MICP) treatment technique and vegetation health and growth. The findings suggest that MICP treatment has no impact on seed germination and growth up to a certain improvement level, but excessive cementation hinders root growth and vegetation coverage.
ACS ES&T ENGINEERING
(2022)
Article
Engineering, Geological
Brina M. Montoya, Shahin Safavizadeh, Mohammed A. Gabr
JOURNAL OF GEOTECHNICAL AND GEOENVIRONMENTAL ENGINEERING
(2019)
Article
Computer Science, Interdisciplinary Applications
Kai Feng, B. M. Montoya, T. M. Evans
COMPUTERS AND GEOTECHNICS
(2017)
Article
Engineering, Geological
B. M. Montoya, J. T. Dejong
GEOTECHNIQUE LETTERS
(2013)