Optimizing protocols for microbial induced calcite precipitation (MICP) for soil improvement–a review
نویسندگان
چکیده
منابع مشابه
FIB/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 کاملThe Requirements for Autonomic Microbiologically-Induced Calcite-Precipitation in Concrete
ID No: 263
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 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 کاملUrease activity in microbiologically-induced calcite precipitation.
The role of microbial urease in calcite precipitation was studied utilizing a recombinant Escherichia coli HB101 containing a plasmid, pBU11, that encodes Bacillus pasteurii urease. The calcite precipitation by E. coli HB101 (pBU11) was significant although its precipitation level was not as high as that by B. pasteurii. Addition of low concentrations (5-100 microM) of nickel, the cofactor of u...
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ژورنال
عنوان ژورنال: European Journal of Environmental and Civil Engineering
سال: 2020
ISSN: 1964-8189,2116-7214
DOI: 10.1080/19648189.2020.1755370