Microbiologically-Induced Soil Stabilization: Application of
            <i>Sporosarcina pasteurii</i>
            for Fugitive Dust Control

Meyer, F.; Min, Soo Hong; Stetler, Larry D.; Bang, S.

doi:10.1061/41165(397)409

Cited by 87 publications

(44 citation statements)

References 15 publications

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“…MICP soil improvement was successfully demonstrated at a variety of scales [10,[19][20][21][22]. However, reliance on bioaugmentation has restricted the technology from becoming a cost-competitive alternative to more traditional ground amelioration techniques.…”

Section: Co(nhmentioning

confidence: 99%

Biostimulation in Desert Soils for Microbial-Induced Calcite Precipitation

Raveh-Amit¹,

Tsesarsky

2020

Applied Sciences

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Microbial-induced calcite precipitation (MICP) is a soil amelioration technique aiming to mitigate different environmental and engineering concerns, including desertification, soil erosion, and soil liquefaction, among others. The hydrolysis of urea, catalyzed by the microbial enzyme urease, is considered the most efficient microbial pathway for MICP. Biostimulated MICP relies on the enhancement of indigenous urea-hydrolyzing bacteria by providing an appropriate enrichment and precipitation medium, as opposed to bioaugmentation, which requires introducing large volumes of exogenous bacterial cultures into the treated soil along with a growth and precipitation medium. Biostimulated MICP in desert soils is challenging as the total carbon content and the bacterial abundance are considerably low. In this study, we examined the biostimulation potential in soils from the Negev Desert, Israel, for the purpose of mitigation of topsoil erosion in arid environments. Incubating soil samples in urea and enrichment media demonstrated effective urea hydrolysis leading to pH increase, which is necessary for calcite precipitation. Biostimulation rates were found to increase with concentrations of energy (carbon) source in the stimulation media, reaching its maximal levels within 3 to 6 days. Following stimulation, calcium carbonate precipitation was induced by spiking stimulated bacteria in precipitation (CaCl2 enriched) media. The results of our research demonstrate that biostimulated MICP is feasible in the low-carbon, mineral soils of the northern Negev Desert in Israel.

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Section: Co(nhmentioning

confidence: 99%

Biostimulation in Desert Soils for Microbial-Induced Calcite Precipitation

Raveh-Amit¹,

Tsesarsky

2020

Applied Sciences

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“…The final concentration of CaCl 2 used in this study was 7.5 % (500 mM) for MICP_3, approximately 5 times less than the concentration (38 %) currently allowed to use commercially (Lohnes and Coree 2002). In addition, the concentrations of NH 4 Cl (5.4 %) and urea (3 %) for MICP_3 were much lower than a urea content allowed (43 %) for commercial use as a hoarfrost protectant pesticide without any evidence of adverse persistent effects (Meyer et al 2011). …”

Section: Penetration Resistancementioning

confidence: 99%

“…In particular, MICP process recently has been explored as a potential dust suppressant when applied to the surfaces of different soils including silt and clay soils Meyer et al 2011). This work is an extension of previous studies to test the effect of MICP process.…”

Section: Introductionmentioning

confidence: 99%

Performance of microbial-induced carbonate precipitation on wind erosion control of sandy soil

Maleki

Ebrahimi

Asadzadeh

et al. 2016

Int. J. Environ. Sci. Technol.

140

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Wind erosion is a serious problem throughout the world which results in soil and environment degradation and air pollution. The main objective of this study was to evaluate feasibility of microbial-induced carbonate precipitation, as a novel soil-strengthening technique, to reduce wind erosion risk of a sandy soil. For this purpose, the erosion of biocemented soil samples was investigated experimentally in a wind tunnel under the condition of wind velocity of 45 km h -1 . The weight loss of treated samples relative to the weight loss of control treatment was 1.29 and 0.16 % for low and high bacterial mix concentrations, respectively, indicating a significant improvement in erosion control in biologically treated samples. The effect of biological treatment on wind erosion control was even superior at the higher velocities. Thereafter, the penetration resistance of the surface layers as a simple index of resistance against wind erosion was measured. Significant improvements in the penetration resistance of the treated soil samples were observed. Although low bacterial mix concentrations did not significantly improve the penetration resistance of the samples, significant improvements in the penetration resistance of the treated soil samples were observed reaching to the highest measured strength (56 kPa) in high bacterial mix concentrations samples. Finally, the morphology of precipitated CaCO 3 crystals using scanning electron microscopy and X-ray powder diffraction analysis showed that the CaCO 3 was mainly precipitated as vaterite crystals forming pointto-point contacts between the sand granules.

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“…The application of the MICP technique has shown promise in various fields, including improvement in the stiffness/strength of sandy soil (Rong et al, 2012;van Paassen, 2009;Whiffin et al, 2007); reductions in foundation settlement (DeJong et al, 2010) and soil permeability (Dennis and Turner, 1998;Seki et al, 1998) ); microbially enhanced oil recovery (Nemati et al, 2005); dust control (Meyer et al, 2011); and wastewater treatment (Hammes et al, 2003).…”

mentioning

confidence: 99%

Improving sand with microbial-induced carbonate precipitation

Shahrokhi-Shahraki

Zomorodian

Niazi‎

et al. 2015

Proceedings of the Institution of Civil Engineers - Ground Impr

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Microbial-induced carbonate precipitation using urea hydrolysis is a relatively new improvement technique for granular soils. An important factor in achieving uniform calcite deposition (and hence consistent improvements in geomechanical properties) throughout the treated soil mass is the protocol adopted for injecting the reagents of ureolytic bacteria, urea and calcium. This paper reports a laboratory study investigating a technique to treat two loose medium quartz sands using different injection strategies. Staged injection including retention periods, and with a pressure head applied during injection of the bacterial cell solution, proved most effective. Sand specimens were treated using different concentrations of bacterial cell and urea–calcium chloride solutions and for a single injection cycle. Measured strength and stiffness values from unconfined compression tests ranged from 50 to 240 kPa and from 6 to 56 MPa, respectively. Permeability coefficient values were reduced by up to approximately one order of magnitude. Hence, a single injection cycle adhering to the proposed treatment method did not significantly affect the drainage capacity of the sand media. Greater improvements in stiffness and strength were achieved for lower bacterial cell and higher cementation solution concentrations, with a higher molarity of urea (non-equimolar solutions) proving even more effective. These findings were confirmed by scanning electron microscope observations.

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Microbiologically-Induced Soil Stabilization: Application of Sporosarcina pasteurii for Fugitive Dust Control

Cited by 87 publications

References 15 publications

Biostimulation in Desert Soils for Microbial-Induced Calcite Precipitation

Biostimulation in Desert Soils for Microbial-Induced Calcite Precipitation

Performance of microbial-induced carbonate precipitation on wind erosion control of sandy soil

Improving sand with microbial-induced carbonate precipitation

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