Effect of injected bacterial suspension volume and relative density on carbonate precipitation resulting from microbial treatment

Rowshanbakht, K; Khamehchiyan, Mashalah; Sajedi, Reza H.; Nikudel, Mohammad Reza

doi:10.1016/j.ecoleng.2016.01.010

Cited by 108 publications

(62 citation statements)

References 23 publications

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“…In order to achieve this aim and that of novel ground improvement technologies, increased collaboration between geotechnical engineers and geomicrobiologists will be required in order to explore more fully a wider range of microbial processes under both natural and engineered conditions. Cheng et al, , 2013Choi et al, 2016;Rowshanbakht et al, 2016;Terzis and Laloui, 2018;van Paassen et al, 2010) with comparable urease activity highlighted (Cheng et al, 2017). Figure 5.…”

Section: Discussionmentioning

confidence: 99%

“…Figure 5. Relationship between CaCO 3 content and unconfined compressive strength for studies in which saturation was either fully saturated or not recorded (grey circle outlines: (Al Cheng et al, 2017Choi et al, 2016;Rowshanbakht et al, 2016;Terzis and Laloui, 2018;van Paassen et al, 2010) with controlled saturation states highlighted (Cheng et al, 2013). Figure 6.…”

Section: Discussionmentioning

confidence: 99%

“…Whiffin 2004 Cheng et al, 2017Cheng et al, , 2013Choi et al, 2016;Rowshanbakht et al, 2016;Terzis and Laloui, 2018;van Paassen et al, 2010), data from these studies are also included in Figure 4 in order to understand the scale of variation. It should also be noted that differences in experimental procedure regarding carrying out UCS tests, can also lead to variability; some researchers use end caps to prepare perfectly flat ends, which can result in higher strengths being achieved than for specimens tested without the use of end caps.…”

Section: Reagentsmentioning

confidence: 99%

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Applications of Microbial Processes in Geotechnical Engineering

Mountassir

Minto

Paassen

et al. 2018

Advances in Applied Microbiology

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Over the last 10-15 years, a new field of "biogeotechnics" has emerged as geotechnical engineers seek to find ground improvement technologies which have the potential to be lower carbon, more ecologically friendly, and more cost-effective than existing practices. This review summarizes the developments which have occurred in this new field, outlining in particular the microbial processes which have been shown to be most promising for altering the hydraulic and mechanical responses of soils and rocks. Much of the research effort in this new field has been focused on microbially induced carbonate precipitation (MICP) via ureolysis, while a comprehensive review of MICP is presented here, the developments which have been made regarding other microbial processes, including MICP via denitrification and biogenic gas generation are also presented. Furthermore, this review outlines a new area of study: the potential deployment of fungi in geotechnical applications which has until now been unexplored.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Reagentsmentioning

confidence: 99%

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Applications of Microbial Processes in Geotechnical Engineering

Mountassir

Minto

Paassen

et al. 2018

Advances in Applied Microbiology

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“…Microorganisms release CO 2 during their metabolism, which solubilize in soil water as HCO 3which produces CaCO 3 at high pH in presence of Ca 2+ [19]. Precipitation of CaCO 3 can be enhanced by the addition of organic compounds rich in nitrogen because the microorganisms hydrolyze urea leading to the production of CO 3 2at neutral/basic pH [20].…”

Section: The Possibility Of Applying Phytoremediation Technology To Lmentioning

confidence: 99%

Characterization of Soils in the Almasu Mare Area through the Determination of Lead Concentrations

Băbău¹,

Micle²,

Sur³

2018

Studia UBB Chemia

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The present study consisted in the determination of lead concentrations in soil samples and sterile material dumped collected from the Almașu Mare mining area. The lead concentration in the samples collected were determined by atomic adsorption spectrometry (AAS). In spite of the fact that all mines from area are nowadays inactive, the results of the chemical analysis showed that the soils in the area are still highly polluted with lead, except at the base of the "Radeș" dump, where the lead concentrations were below the intervention thresholds.

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“…Relationship between CaCO3 content and unconfined compressive strength, taken from the literature[9][10][11][12][13][14][15][16][17][18][19][20].…”

mentioning

confidence: 99%

Micro-continuum modelling of injection strategies for microbially induced carbonate precipitation

2019

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Microbially induced carbonate precipitation is a promising technique for ground improvement. In order for MICP to progress from a lab-scale process to a commercially viable alternative ground improvement option, a combination of field-trials and field-scale modelling of the process is required. We present the results of a field-scale model in which differing injection strategies are evaluated and find that longer treatment times make more efficient use of reagents, but may come with higher operational costs, and that utilising multiple strains of bacteria with different reaction kinetics and transport properties may improve efficiency.

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Effect of injected bacterial suspension volume and relative density on carbonate precipitation resulting from microbial treatment

Cited by 108 publications

References 23 publications

Applications of Microbial Processes in Geotechnical Engineering

Applications of Microbial Processes in Geotechnical Engineering

Characterization of Soils in the Almasu Mare Area through the Determination of Lead Concentrations

Micro-continuum modelling of injection strategies for microbially induced carbonate precipitation

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