Biomineralization of Calcium Carbonate Polymorphs by the Bacterial Strains Isolated from Calcareous Sites

被引：173

作者：

Dhami, Navdeep Kaur ^{[1
]}

Reddy, M. Sudhakara ^{[1
]}

Mukherjee, Abhijit ^{[2
]}

机构：

[1] Thapar Univ, Dept Biotechnol, Patiala 147004, Punjab, India

[2] Thapar Univ, Dept Civil Engn, Patiala 147004, Punjab, India

来源：

JOURNAL OF MICROBIOLOGY AND BIOTECHNOLOGY | 2013年 / 23卷 / 05期

关键词：

Calcite; vaterite; urease; Bacillus; biofilm; carbonic anhydrase; PRECIPITATION; MINERALIZATION; UREASE; IMPROVEMENT; CAPTURE; EPS;

D O I：

10.4014/jmb.1212.11087

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

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 biofihn. 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 strain-specific 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.

引用

页码：707 / 714

页数：8

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