Soil improvement by microbially induced calcite precipitation (MICP): a review about mineralization mechanism, factors, and soil properties

Bu, Changming; Lü, Xiaoling; Zhu, Dongxu; Liu, Lei; Sun, Yi; Wu, Qiutong; Zhang, Wentao; Wei, Qike

doi:10.1007/s12517-022-10012-w

Cited by 40 publications

(22 citation statements)

References 191 publications

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“…Several injection strategies for MICP treatment have been presented in biomineralization literature [ 2 , 58 – 61 ], with two predominant methods (referred to collectively as the longitudinal injection strategy in this study) emerging as the most commonly employed in practical applications [ 60 , 62 , 63 ]. Method A, designated as the mixed injection strategy, involves the initial mixing of a two-phase solution (BS and CS), followed by simultaneous injection into the specimen from the injection port [ 64 ].…”

Section: Methodsmentioning

confidence: 99%

Identification and extraction of cementation patterns in sand modified by MICP: New insights at the pore scale

Wang,

Guo,

Luo

et al. 2024

PLoS ONE

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Microbially induced calcium carbonate precipitation (MICP) is an environmentally friendly technology that improves soil permeability resistance through biocementation. In this study, 2D microscopic analysis and 3D volume reconstruction were performed on river sand after 24 cycles of bio-treatment based on stacked images and computed tomography (CT) scanning data, respectively, to extract biocementation patterns between particles. Based on the mutual validation findings of the two techniques, three patterns in the biocemented sand were identified as G-C-G, G-C, and G-G. Specifically, 2D microscopic analysis showed that G-C-G featured multi-particle encapsulation and bridging, with a pore filling ratio of 81.2%; G-C was characterized by locally coated particle layers, with a pore filling ratio of 19.7%; and the G-G was marked by sporadic filling of interparticle pores, with a pore filling ratio of 11.7%. G-C-G had the best cementation effect and permeability resistance (effective sealing rate of 68.5%), whereas G-C (effective sealing rate of 2.4%) had a relatively minor contribution to pore-filling and flow sealing. 3D volume reconstruction showed that G-C-G had the highest pore filling rate, followed by G-G and G-C. The average filling ratios of area and volume for G-C-G were 83.979% and 77.257%, respectively; for G-G 20.360% and 23.600%; and for G-C 11.545% and 11.250%. The analysis of the representative element volume (REV) was conducted, and the feasibility and reliability of the micro-scale pattern extraction results were confirmed to guide the analysis of macro-scale characteristics. The exploration of the effectiveness of cementation patterns in fluid sealing provides valuable insights into effective biocementation at the pore scale of porous media, which may inspire future research.

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Section: Methodsmentioning

confidence: 99%

Identification and extraction of cementation patterns in sand modified by MICP: New insights at the pore scale

Wang,

Guo,

Luo

et al. 2024

PLoS ONE

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“…In the formula 3, P is the porosity, X 1 is the NMR mass of the composite when it is full of water, X 2 is the NMR mass of the composite when it is absolutely dry, ρ w is the density of water, taken as 1 g/cm 3 , and V w is the volume of the full water sample. The LF-NMR test is based on the use of H protons as a probe to detect changes in the amount of T 2 spectral signal during aspiration, with the signal showing a positive correlation with the quality of the aspiration.…”

Section: Relationship Between Sand Column Water Absorption Mass and T...mentioning

confidence: 99%

“…Compared to microbial reinforcement of sand and gravel materials with larger grain sizes, desert aeolian sandy soil has characteristics such as small grain size and poor water retention (Bu C et al 2022), which will affect the injection of microorganisms and cementing solutions, and is often accompanied by di culties in grouting and uneven reinforcement effects during the curing process. To this problem, we conducted MRI tests on the longitudinal sections of the top and bottom of the sand column at each stage of the curing of the two sand columns to collect top and bottom NMR imaging data of the test sand columns to make a preliminary determination of the internal homogeneity of the microbial cured sand columns.…”

Section: Os and Ws Column Mri Image Analysismentioning

confidence: 99%

Analysis of the effect of wheat straw flour on the pore structure of microbial induced carbonate precipitation (MICP) cemented desert aeolian sandy soil based on low field NMR

Zhou

Jin

et al. 2022

Preprint

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In the process of microbial curing of desert aeolian sandy soil, we thought of the water-holding properties of straw flour in view of the high proportion of fine particles and poor water retention of desert aeolian sandy soil, and therefore designed an experiment to add straw flour to enhance the effect of microbial curing of desert aeolian sandy soil. The sand columns prepared under different curing stages were analysed by low-field NMR techniques. The test results show that: (1) the curing product calcium carbonate can effectively fill the pores of the sand and reduce the total porosity, and the addition of straw powder increases the total porosity of the sand column, especially the number of large pores (5–60µm) increases significantly; (2) The addition of straw powder increased the original sand column pore volume and pore size, significantly increasing the water holding capacity of the cured sand column, and the free water content of the sand column was significantly greater than that of the original sand column;(3) The pore filling rate of the sand column decreased after mixing with straw powder, which improved the uniformity of calcium carbonate precipitation within the sand column, but the shear strength was lower than that of the original sand column. The results of the study provide a theoretical basis and data support for optimising the curing effect of desert aeolian sandy soil and its water-holding capacity.

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“…These challenges restrict the use of ureolytic MICP for long-term CO 2 sequestration 26 . Many of these limitations can be addressed with photosynthetic MICP, which requires no additional feedstocks and produces no toxic by-products 18,25 . Recently, photosynthetic MICP was used to design living building materials that mineralized over time 17 .…”

Section: Introductionmentioning

confidence: 99%

Dual carbon sequestration with photosynthetic living materials

Dranseike,

Cui,

Ling

et al. 2023

Preprint

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Natural ecosystems offer efficient pathways for carbon sequestration, serving as a resilient approach to remove CO2from the atmosphere with minimal environmental impact. However, the control of living systems outside of their native environments is often challenging. Here, we engineered a photosynthetic living material for dual CO2sequestration by immobilizing photosynthetic microorganisms within a printable polymeric network. The carbon concentrating mechanism of the cyanobacteria enabled accumulation of CO2within the cell, resulting in biomass production. Additionally, the metabolic production of OH-ions in the surrounding medium created an environment for the formation of insoluble carbonates via microbially-induced calcium carbonate precipitation (MICP). Digital design and fabrication of the living material ensured sufficient access to light and nutrient transport of the encapsulated cyanobacteria, which were essential for long-term viability (more than one year) as well as efficient photosynthesis and carbon sequestration. The photosynthetic living materials sequestered approximately 2.5 mg of CO2per gram of hydrogel material over 30 days via dual carbon sequestration, with 2.2 ± 0.9 mg stored as insoluble carbonates. Over an extended incubation period of 400 days, the living materials sequestered 26 ± 7 mg of CO2per gram of hydrogel material in the form of stable minerals. These findings highlight the potential of photosynthetic living materials for scalable carbon sequestration, carbon-neutral infrastructure, and green building materials. The simplicity of maintenance, coupled with its scalability nature, suggests broad applications of photosynthetic living materials as a complementary strategy to mitigate CO2emissions.

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Soil improvement by microbially induced calcite precipitation (MICP): a review about mineralization mechanism, factors, and soil properties

Cited by 40 publications

References 191 publications

Identification and extraction of cementation patterns in sand modified by MICP: New insights at the pore scale

Identification and extraction of cementation patterns in sand modified by MICP: New insights at the pore scale

Analysis of the effect of wheat straw flour on the pore structure of microbial induced carbonate precipitation (MICP) cemented desert aeolian sandy soil based on low field NMR

Dual carbon sequestration with photosynthetic living materials

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