Field trial on use of soybean crude extract for carbonate precipitation and wind erosion control of sandy soil

Gao, Yufeng; Meng, Hao; He, Jia; Qi, Yongshuai; Lei, Hang

doi:10.1007/s11771-020-4549-x

Cited by 24 publications

(4 citation statements)

References 59 publications

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“…By spraying microorganisms and cementing solution into the wind-sand soil, which is cemented into a sufficiently strong, dense, and wind-erosion resistant monolith, Tian demonstrated that with the increase in microbial spraying frequency and colloid concentration, the density of treated sand slightly increased, and the wind erosion rate significantly decreased [ 170 – 172 ]. Li accelerated sand fixation and mitigated desertification through revegetation and ecological restoration by combining microbial mineralization with SCB technology [ 173 ]. Gao and Zhang et al [ 174 , 175 ] induced microbial growth by soybean extract and added Mg to the medium for desertification control in a desert area of northwest China, so as to further benefit ecosystem reconstruction.…”

Section: Mineralization Application Areasmentioning

confidence: 99%

Research status and development of microbial induced calcium carbonate mineralization technology

et al. 2022

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In nature, biomineralization is a common phenomenon, which can be further divided into authigenic and artificially induced mineralization. In recent years, artificially induced mineralization technology has been gradually extended to major engineering fields. Therefore, by elaborating the reaction mechanism and bacteria of mineralization process, and summarized various molecular dynamics equations involved in the mineralization process, including microbial and nutrient transport equations, microbial adsorption equations, growth equations, urea hydrolysis equations, and precipitation equations. Because of the environmental adaptation stage of microorganisms in sandy soil, their reaction rate in sandy soil environment is slower than that in solution environment, the influencing factors are more different, in general, including substrate concentration, temperature, pH, particle size and grouting method. Based on the characteristics of microbial mineralization such as strong cementation ability, fast, efficient, and easy to control, there are good prospects for application in sandy soil curing, building improvement, heavy metal fixation, oil reservoir dissection, and CO2 capture. Finally, it is discussed and summarized the problems and future development directions on the road of commercialization of microbial induced calcium carbonate precipitation technology from laboratory to field application.

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Section: Mineralization Application Areasmentioning

confidence: 99%

Research status and development of microbial induced calcium carbonate mineralization technology

et al. 2022

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“…e results indicated that saturated specimens (urease activity was 5.77 mM urea/ min) obtained better moisture stability than unsaturated specimens (urease activity was 4.55 mM urea/min). Some scholars [36,37] have also used urease extracted from soybean to induce CaCO 3 deposition to solidify sand. In addition, urease can induce the formation of CaCO 3 crystals, which is effective in sand fixing.…”

Section: Analysis Of the Influence Factors Of Soil Solidification By Micpmentioning

confidence: 99%

“…In addition, urease can induce the formation of CaCO 3 crystals, which is effective in sand fixing. However, the application cost of using purified urease is expensive [36]. Some scholars extracted urease from plants for research.…”

Section: Analysis Of the Influence Factors Of Soil Solidification By Micpmentioning

confidence: 99%

Geotechnical Engineering Properties of Soils Solidified by Microbially Induced CaCO₃ Precipitation (MICP)

Liu

Chen

2021

Advances in Civil Engineering

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Microbially induced calcium carbonate precipitation (MICP) uses the metabolic function of microbes to carry out biochemical reactions with other substances in the environment. Through the controlled growth of inorganic minerals, soil particles are cemented and soil pores are filled to solidify the soil and reduce its permeability. Thus, the application of this technology was foreseen in geotechnical engineering and environment (building antiseepage, contaminated soil restoration, slope soil erosion, and sand liquefaction). In this review article, based on current research findings, the urea hydrolysis and the cementation mechanism of MICP are briefly described. The influences of factors such as enzyme activity, cementation solution concentration, pH, temperature, grouting method, and particle size on MICP-treated soil are discussed. The engineering properties of MICP-treated soils are evaluated, for instance, the strength, stiffness, liquefaction resistance, permeability, and durability. The applications of MICP technology in ground improvement, geotechnical seepage control, foundation erosion resistance, and fixation of heavy metals are summarized. Finally, future directions of the development of MICP technology are elucidated to provide a reference and guidance for the promotion of MICP technology in the geotechnical engineering field.

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“…In the triaxial consolidated undrained test, the solidified silty soil showed a greater expand response on the stress-strain curve, indicating significantly improved mechanical properties. Gao et al [ 25 ] carried out field tests in Ulan Buh Desert, Ningxia Hui Autonomous Region, China, to evaluate the SICP potential for reducing wind erosion of sandy soil. The results showed that SICP significantly enhanced the surface strength and wind erosion resistance of sandy soil.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on High-Temperature Damage Repair of Concrete by Soybean Urease Induced Carbonate Precipitation

et al. 2022

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In this study, the effects of soybean-urease-induced carbonate precipitation on a high-temperature damage repair of concrete were explored. C50 concrete specimens were exposed to high temperatures from 300 to 600 °C, then cooled to an ambient temperature and repaired by two different methods. The influences of the damage temperature and repair methods on surface film thickness, average infrared temperature increase, water absorption, and compressive strength were investigated. Scanning electron microscopy (SEM) images were carried out to further study the mechanism involved. The results revealed that the white sediments on the surface of the repaired specimens were calcium carbonate (CaCO3) and calcium oxalate (CaC2O4). The surface film thickness reached up to 1.94 mm after repair. The average infrared temperature increase in the repaired specimens at different damage temperatures was averagely reduced by about 80% compared with that before the repair. It showed more obvious repair effects at higher temperatures in water absorption and compressive strength tests; the compressive strength of repaired specimens was 194% higher than that before repairs at 600 °C. A negative pressure method was found to be more effective than an immersion method. This study revealed the utilization of SICP on repairing high-temperature damage of concrete is feasible theoretically.

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Field trial on use of soybean crude extract for carbonate precipitation and wind erosion control of sandy soil

Cited by 24 publications

References 59 publications

Research status and development of microbial induced calcium carbonate mineralization technology

Research status and development of microbial induced calcium carbonate mineralization technology

Geotechnical Engineering Properties of Soils Solidified by Microbially Induced CaCO₃ Precipitation (MICP)

Experimental Study on High-Temperature Damage Repair of Concrete by Soybean Urease Induced Carbonate Precipitation

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Field trial on use of soybean crude extract for carbonate precipitation and wind erosion control of sandy soil

Cited by 24 publications

References 59 publications

Research status and development of microbial induced calcium carbonate mineralization technology

Research status and development of microbial induced calcium carbonate mineralization technology

Geotechnical Engineering Properties of Soils Solidified by Microbially Induced CaCO3 Precipitation (MICP)

Experimental Study on High-Temperature Damage Repair of Concrete by Soybean Urease Induced Carbonate Precipitation

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Geotechnical Engineering Properties of Soils Solidified by Microbially Induced CaCO₃ Precipitation (MICP)