Biocalcification by Bacillus pasteurii urease: a novel application.
Biocalcification, also known as microbiologically induced calcite precipitation (MICP), is a phenomenon involving the activity of the enzyme urease. A large number of soil microorganisms exhibit urease-producing ability. A novel application of MICP to improve properties of bricks by a soil bacteria Bacillus pasteurii NCIM 2477 was studied. Most of the deterioration of brick structures takes place because of the presence of moisture. Deposition of calcite on the surface and in voids of bricks reduces the water absorption substantially. A favorable effect of microbes to improve the durability of bricks by reducing water absorption was demonstrated as a novel concept in this paper.
Food Engineering and Technology Department, Institute of Chemical Technology Deemed University, Matunga, Mumbai 400019, India.
Deepak
D
Sarda
Huzaifa S
HS
Choonia
D D
DD
Sarode
S S
SS
Lele
D001407:Bacillus / Q000378:metabolism*; D001426:Bacterial Proteins / Q000378:metabolism*; D001709:Biotechnology / Q000379:methods; D002119:Calcium Carbonate / Q000378:metabolism*; D007218:Industrial Microbiology / Q000379:methods; D012988:Soil Microbiology; D014510:Urease / Q000378:metabolism*
D001426:Bacterial Proteins; D014510:Urease; D002119:Calcium Carbonate