Cementation of sand soil by microbially induced calcite precipitation at various degrees of saturation
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چکیده
منابع مشابه
Cementation 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...
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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...
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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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The particular bacterium under investigation here (S. pasteurii) is unique in its ability, under the right conditions, to induce the hydrolysis of urea (ureolysis) in naturally occurring environments through secretion of an enzyme urease. This process of ureolysis, through a chain of chemical reactions, leads to the formation of calcium carbonate precipitates. This is known as Microbiologically...
متن کاملCalcite precipitation induced by bacteria and bacterially produced carbonic anhydrase
Wei Li, Li-Ping Liu, Peng-Peng Zhou, Long Cao, Long-Jiang Yu* and Shi-Yun Jiang Institute of Resource Biology and Biotechnology, Department of Biotechnology, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, PR China Key Laboratory of Molecular Biophysics, Ministry of Education, Wuhan 430074, PR China Department of Bioengineering and Chemical E...
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ژورنال
عنوان ژورنال: Canadian Geotechnical Journal
سال: 2013
ISSN: 0008-3674,1208-6010
DOI: 10.1139/cgj-2012-0023