Mature fine tailings consolidation through microbial induced calcium carbonate precipitation

Liang, J. Nellie; Guo, Zhengyang; Deng, Lijun; Liu, Yang

doi:10.1139/cjce-2015-0069

Cited by 32 publications

(2 citation statements)

References 19 publications

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“…Various studies have been performed so far in which MICP is used for improving resistance to liquefaction (Montoya et al 2013), improving foundation bearing capacity and slope stability (van Paassen et al 2010;Whiffin et al 2007), creating water-impermeable crust on sand surface (Stabnikov et al 2011), healing cracks in concrete and masonry (Bang et al 2010;Amidi and Wang 2015), treating waste (Chu et al 2009), immobilizing heavy metals (Fujita et al 2010), performing shallow carbon sequestration (Washbourne et al 2012), promoting the fine tailings consolidation (Liang et al 2015), and improving the compressibility and shear strength of organic soil (Canakci et al 2015).…”

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.

130

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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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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.

130

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“…Nowadays, the MICP technology is used in many geotechnical engineering applications, such as wind erosion control of sandy soil [1], promoting the consolidation of fine tailings [2], stabilisation of sandy soil foreshore slop [3], and improving the compressibility and shear strength of organic soil [4]. It has also shown great potential in engineering applications [5].…”

Section: Introductionmentioning

confidence: 99%

Mineralization Process of Biocemented Sand and Impact of Bacteria and Calcium Ions Concentrations on Crystal Morphology

Tang

Lian

et al. 2017

Advances in Materials Science and Engineering

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Microbial-induced calcite precipitation (MICP) is a sustainable technique used to improve sandy soil. Analysis of the mineralization process, as well as different bacterial suspensions and calcium concentrations on the crystal morphology, revealed that the mineralization process included four stages: self-organised hydrolysis of microorganisms, molecular recognition and interface interaction, growth modulation, and epitaxial growth. By increasing bacterial suspensions and calcium concentrations, the crystal morphology changed from hexahedron to oblique polyhedron to ellipsoid; the best crystal structure occurs at OD 600 = 1.0 and [Ca 2+ ] = 0.75 mol/l. It should be noted that interfacial hydrogen bonding is the main force that binds the loose sand particles. These results will help in understanding the mechanism of MICP.

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Effect of microbial-induced calcite precipitation on shear strength of gold mine tailings

Behzadipour

Sadrekarimi

2023

Bull Eng Geol Environ

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Mature fine tailings consolidation through microbial induced calcium carbonate precipitation

Cited by 32 publications

References 19 publications

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

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

Mineralization Process of Biocemented Sand and Impact of Bacteria and Calcium Ions Concentrations on Crystal Morphology

Effect of microbial-induced calcite precipitation on shear strength of gold mine tailings

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