A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
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. Microbiologically induced calcite precipitation was found effective in increasing brick strength by reducing water absorption up to 45%. Among different microbial cultures, Bacillus pasteurii NCIM 2477 was found to be the highest producer of urease and was an effective inducer of calcite deposition on the surface of the bricks. The reduction of water absorption was attributed to biocalcification on the surface, leading to a reduction in permeability and a subsequent decrease in the diffusion of water and other corrosive ions The water absorption capacity of bricks was lowest for BHI (brain heart infusion medium)-cured bricks (approx. 14%) compared to the control samples (25%). However, use of BHI on a large scale would make the process very costly, showing the need to develop cheaper media that also enhance the production of urease.
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. Microbiologically induced calcite precipitation was found effective in increasing brick strength by reducing water absorption up to 45%. Among different microbial cultures, Bacillus pasteurii NCIM 2477 was found to be the highest producer of urease and was an effective inducer of calcite deposition on the surface of the bricks. The reduction of water absorption was attributed to biocalcification on the surface, leading to a reduction in permeability and a subsequent decrease in the diffusion of water and other corrosive ions The water absorption capacity of bricks was lowest for BHI (brain heart infusion medium)-cured bricks (approx. 14%) compared to the control samples (25%). However, use of BHI on a large scale would make the process very costly, showing the need to develop cheaper media that also enhance the production of urease.
Biocalcification by Bacillus pasteurii urease: a novel application
Sarda, Deepak (author) / Choonia, Huzaifa S. (author) / Sarode, D.D. (author) / Lele, S.S. (author)
Journal of Industrial Microbiology and Biotechnology ; 36 ; 1111-1115
2009
5 Seiten, 3 Bilder, 2 Tabellen, 18 Quellen
Article (Journal)
English
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