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Microbially Induced Calcite Precipitation Employing Environmental Isolates

Department of Civil Engineering, Hongik University, 94, Wausan-ro, Mapo-gu, Seoul 04066, Korea
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Academic Editor: Carla Renata Arciola
Materials 2016, 9(6), 468; https://doi.org/10.3390/ma9060468
Received: 3 February 2016 / Revised: 19 May 2016 / Accepted: 8 June 2016 / Published: 15 June 2016
(This article belongs to the Section Biomaterials)
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 were injected at least four times into cohesionless soils of two different relative densities (60% and 80%), and the amount of calcite precipitation was measured. It was found that the relative density of cohesionless soils significantly affects the amount of calcite precipitation and that there is a weak correlation between urease activity and calcite precipitation. View Full-Text
Keywords: MICP; microbe; calcite precipitation; urease activity; environmental isolates MICP; microbe; calcite precipitation; urease activity; environmental isolates
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Kim, G.; Youn, H. Microbially Induced Calcite Precipitation Employing Environmental Isolates. Materials 2016, 9, 468.

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