Evaluation of Factors Affecting Erodibility Improvement for MICP-Treated Beach Sand

Chek, Abigail; Crowley, Raphael; Ellis, Terri N.; Durnin, Michael; Wingender, Brian

doi:10.1061/(asce)gt.1943-5606.0002481

Cited by 39 publications

(10 citation statements)

References 30 publications

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“…Among various pathways, MICP via ureolysis or urea degradation has been extensively studied pertaining to isolation of ureolytic microbes in different and extreme locations, utilization of S. pasteurii as a standard organism, effect of prevailing biochemical and environmental conditions on ureolysis and MICP, employing augmentation or stimulation or biogrouting for various applications, etc. [12][13][14][15][16]. Various laboratory studies and field trials have shown the application of ureolysis-driven MICP in soil strengthening, remediation of heavy metals and radionuclides, building materials, enhanced oil recovery, CO2 sequestration, etc.…”

Section: State Of the Art Of Microbial Carbonate Precipitationmentioning

confidence: 99%

A critical review on microbial carbonate precipitation via denitrification process in building materials

2021

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The naturally occurring biomineralization or microbially induced calcium carbonate (MICP) precipitation is gaining huge attention due to its widespread application in various fields of engineering. Microbial denitrification is one of the feasible metabolic pathways, in which the denitrifying microbes lead to precipitation of carbonate biomineral by their basic enzymatic and metabolic activities. This review article explains all the metabolic pathways and their mechanism involved in the MICP process in detail along with the benefits of using denitrification over other pathways during MICP implementation. The potential application of denitrification in building materials pertaining to soil reinforcement, bioconcrete, restoration of heritage structures and mitigating the soil pollution has been reviewed by addressing the finding and limitation of MICP treatment. This manuscript further sheds light on the challenges faced during upscaling, real field implementation and the need for future research in this path. The review concludes that although MICP via denitrification is an promising technique to employ it in building materials, a vast interdisciplinary research is still needed for the successful commercialization of this technique.

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Section: State Of the Art Of Microbial Carbonate Precipitationmentioning

confidence: 99%

A critical review on microbial carbonate precipitation via denitrification process in building materials

2021

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“…Calcium chloride as a calcium source was widely used − and played a tremendous role in the MICP process. − Meanwhile, the physical and chemical properties of clay minerals significantly affected Ca 2+ ions. , For instance, the surface charge of clay minerals was changed by Ca 2+ ions. In addition, the stoichiometric interaction between positively charged Ca 2+ ions and the negatively charged bacterial wall was observed, which was beneficial to the adhesion of bacteria onto the surface of clay minerals and leads to an increase in the size of biomineral formed by MICP .…”

Section: Introductionmentioning

confidence: 99%

Ca²⁺-Facilitated Adhesion of Bacteria on the Na-Montmorillonite Surface

Sun

Lei

2023

ACS Omega

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The adhesion of bacteria on clay surfaces strongly affected their migration and distribution in soil and water. Bacterial adhesion experiments on the Na-montmorillonite (Na-MMT) surface were conducted to determine the role of Na-MMT in the bacterial adhesion process and to prove the validity of the isotherm and kinetic theory for the bacterial surface adhesion in the presence of Ca2+ ions. Batch adhesion experiments with bacteria on the Na-MMT surface were carried out with varying time frames, temperatures, bacterial concentrations, and Ca2+ ion concentrations. The adhesion capacity of Na-MMT significantly correlated with the Ca2+ ion concentration, temperature, time frame, and bacterial concentration when Ca2+ ions were present. The adhesion morphology of the bacteria onto the Na-MMT surface, observed through the zeta-potential and atomic force microscopy (AFM), additionally demonstrated that the bacterial adhesion onto the Na-MMT surface was dominated by the nonelectrostatic force.

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“…This soil treatment technique is mostly adopted to increase the load-bearing capacity of foundations [1,4], provide resistance to erosion and against liquefaction [5][6][7], and decrease permeability in barriers [8]. Recently, it was used for reducing the collapse potential of soils [9,10].…”

Section: Introductionmentioning

confidence: 99%

Water Retention Curve of Biocemented Sands Using MIP Results

2022

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Biocementation is a soil treatment technique wherein bacteria living in soil pores promote the precipitation of calcium carbonate. One of the most recent applications of this treatment is to provide resistance against the erosion of slopes by creating a resistant cover but still allowing infiltration to avoid water runoff. For modeling infiltration, it is fundamental to know the water retention curve of the treated material. This may not be an easy task because the soils most suitable for biocementation treatment are sands, due to their large pore sizes and consequent high permeability. The water retention curves (WRCs) of such types of soil are characterized for having a very small air entry value, followed by an almost-horizontal zone, which cannot be measured by using the vapor equilibrium, most of the existing sensors, or a water dewpoint potentiometer. Data from mercury intrusion porosimetry (MIP) tests can be used as an alternative to find the WRC, and this is explored in this paper. The model for the water retention curve presented considers the deformability of the soil during the MIP test, assuming an isotropic elastic behavior. The WRC derived from the MIP tests is well-fitted to the points measured by using a water dewpoint psychrometer (only for suctions above 1 MPa) and vapor equilibrium.

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Evaluation of Factors Affecting Erodibility Improvement for MICP-Treated Beach Sand

Cited by 39 publications

References 30 publications

A critical review on microbial carbonate precipitation via denitrification process in building materials

A critical review on microbial carbonate precipitation via denitrification process in building materials

Ca²⁺-Facilitated Adhesion of Bacteria on the Na-Montmorillonite Surface

Water Retention Curve of Biocemented Sands Using MIP Results

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Evaluation of Factors Affecting Erodibility Improvement for MICP-Treated Beach Sand

Cited by 39 publications

References 30 publications

A critical review on microbial carbonate precipitation via denitrification process in building materials

A critical review on microbial carbonate precipitation via denitrification process in building materials

Ca2+-Facilitated Adhesion of Bacteria on the Na-Montmorillonite Surface

Water Retention Curve of Biocemented Sands Using MIP Results

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Ca²⁺-Facilitated Adhesion of Bacteria on the Na-Montmorillonite Surface