Biomineralization of calcium carbonate polymorphs by the bacterial strains isolated from calcareous sites
MetadataShow full item record
Microbially induced calcium carbonate precipitation (MICCP) is a naturally occurring biological process that has various applications in remediation and restoration of a range of building materials. In the present investigation, five ureolytic bacterial isolates capable of inducing calcium carbonate precipitation were isolated from calcareous soils on the basis of production of urease, carbonic anhydrase, extrapolymeric substances, and biofilm. Bacterial isolates were identified as Bacillus megaterium, B. cereus, B. thuringiensis, B. subtilis, and Lysinibacillus fusiformis based on 16S rRNA analysis. The calcium carbonate polymorphs produced by various bacterial isolates were analyzed by scanning electron microscopy, confocal laser scanning microscopy, X ray diffraction, and Fourier transmission infra red spectroscopy. A strainspecific precipitation of calcium carbonate forms was observed from different bacterial isolates. Based on the type of polymorph precipitated, the technology of MICCP can be applied for remediation of various building materials.
Showing items related by title, author, creator and subject.
Rajasekar, A.; Wilkinson, S.; Sekar, R.; Bridge, J.; Medina-Roldán, E.; Loo Chin Moy, Charles (2018)© 2018, Canadian Science Publishing. All rights reserved. We report an investigation of microbially induced carbonate precipitation by seven indigenous bacteria isolated from a landfill in China. Bacterial strains were ...
Bacterial community dynamics and biocement formation during stimulation and augmentation: Implications for soil consolidationDhami, N.; Alsubhi, W.; Watkin, E.; Mukherjee, Abhijit (2017)Microbially-induced CaCO 3 precipitation (MICP) is a naturally occurring process wherein durable carbonates are formed as a result of microbial metabolic activities. In recent years, MICP technology has been widely ...
Dhami, N.; Mukherjee, Abhijit; Reddy, M. (2013)Evidence of bacterial involvement in precipitation of calcium carbonates has brought a revolution in the field of applied microbiology, geotechnical sciences, environmental and civil engineering with its marked success ...