Lactose mother liquor as an alternative nutrient source for microbial concrete production by Sporosarcina pasteurii

Microbiologically induced calcite precipitation by the bacterium Sporosarcina pasteurii (NCIM 2477) using the industrial effluent of the dairy industry, lactose mother liquor (LML) as growth medium was demonstrated for the first time in this study. The urease activity and the calcite precipitation b...

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Bibliographic Details
Published in:Journal of industrial microbiology & biotechnology 2009-03, Vol.36 (3), p.433-438
Main Authors: Achal, V, Mukherjee, A, Basu, P. C, Reddy, M. S
Format: Article
Language:English
Subjects:
Bacteria
Bacteria - growth & development
Bacteria - metabolism
Biochemistry
Bioinformatics
Biological and medical sciences
Biomedical and Life Sciences
Biotechnology
Calcite
Calcium Carbonate
Compressive Strength
Concrete
Construction Materials
culture media
Culture Media - chemistry
Dairy industry
enzyme activity
Enzymes
Fundamental and applied biological sciences. Psychology
Genetic Engineering
Industrial effluents
Industrial Microbiology - methods
Industrial wastewater
Inorganic Chemistry
Lactose
Lactose - metabolism
lactose mother liquor
Life Sciences
Liquor
microbial growth
microbial physiology
Microbiology
Nutrients
Operating costs
Original Paper
Potassium
Sporosarcina pasteurii
Studies
urea
urease
Urease - metabolism
Variance analysis
Yeast
Yeasts
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Summary:Microbiologically induced calcite precipitation by the bacterium Sporosarcina pasteurii (NCIM 2477) using the industrial effluent of the dairy industry, lactose mother liquor (LML) as growth medium was demonstrated for the first time in this study. The urease activity and the calcite precipitation by the bacterium was tested in LML and compared with the standard media like nutrient media and yeast extract media. Calcite constituted 24.0% of the total weight of the sand samples plugged by S. pasteurii and urease production was found to be 353 U/ml in LML medium. The compressive strength of cement mortar was increased by S. pasteurii in all the media used compared to control. No significant difference in the growth, urease production and compressive strength of mortar among the media suggesting LML as an alternative source for standard media. This study demonstrates that microbial calcite acts as a sealing agent for filling the gaps or cracks and fissures in constructed facilities and natural formations alike.
ISSN:1367-5435
1476-5535
DOI:10.1007/s10295-008-0514-7