Exploring an Environmentally Friendly Microbially Induced Calcite Precipitation (MICP) Technology for Improving Engineering Properties of Cement-Stabilized Granite Residual Soil
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چکیده
منابع مشابه
Microbially Induced Calcite Precipitation Employing Environmental Isolates
In this study, five microbes were employed to precipitate calcite in cohesionless soils. Four microbes were selected from calcite-precipitating microbes isolated from calcareous sand and limestone cave soils, with Sporosarcina pasteurii ATCC 11859 (standard strain) used as a control. Urease activities of the four microbes were higher than that of S. pasteurii. The microbes and urea-CaCl₂ medium...
متن کاملCementation of Sand Soil by Microbially Induced Calcite Precipitation at Various Degrees of Saturation
4 A newly emerging microbiological soil stabilization method, known as microbially 5 induced calcite precipitation (MICP), is tested for geotechnical engineering 6 applications. MICP is a promising technique that utilizes the metabolic pathways of 7 bacteria to form calcite precipitation throughout the soil matrix, leading to an increase 8 in soil strength and stiffness. This paper investigates...
متن کاملFIB/SEM Imaging of Microbial Induced Calcite Precipitation in Sandy Soil
As one of the emerging soil improvement techniques, microbial induced calcite precipitation (MICP) can bond soil grains together and improve the engineering properties of soil [1]. bacteria produces urease enzyme can catalyze urea to carbonate and result in calcite precipitation in elevated pH environment. The forms of calcite precipitation around the bacteria limit the availability of oxygen a...
متن کاملAn Overview of the Factors Affecting Microbial-Induced Calcite Precipitation and its Potential Application in Soil Improvement
Microbial-induced calcite precipitation (MICP) is a relatively green and sustainable soil improvement technique. It utilizes biochemical process that exists naturally in soil to improve engineering properties of soils. The calcite precipitation process is uplifted by the mean of injecting higher concentration of urease positive bacteria and reagents into the soil. The main objective of this pap...
متن کاملMicrobially induced calcite precipitation-based sequestration of strontium by Sporosarcina pasteurii WJ-2.
Contamination by radioactive strontium ((90)Sr) is a significant environmental problem. Ureolytically driven calcium carbonate precipitation has been proposed for use in geotechnical engineering for soil remediation applications. In this study, 68 ureolytic bacterial strains were newly isolated from various environments. Of these, 19 strains were selected based on ureolytic activity shown when ...
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ژورنال
عنوان ژورنال: Nature Environment and Pollution Technology
سال: 2020
ISSN: 0972-6268,2395-3454
DOI: 10.46488/nept.2020.v19i03.035