Microbially Induced Calcium Carbonate Precipitation (MICP) and Its Potential in Bioconcrete: Microbiological and Molecular Concepts
María José Castro-Alonso,Lilia Ernestina Montañez-Hernández,María Alejandra Sánchez-Muñoz,Mariel Rubi Macias Franco,Rajeswari Narayanasamy,Nagamani Balagurusamy +5 more
TLDR
Urea hydrolysis is the most applied in concrete repair mechanisms and is clearly evident that microbiological and molecular components are essential to improve the process and performance of bioconcrete.Abstract:
In this review, microbiological and molecular concepts of Microbially induced Calcium Carbonate Precipitation (MICP) and their role in bioconcrete are discussed. MICP is a widespread biochemical process in soils, caves, freshwater, marine sediments and hypersaline habitats. MICP is an outcome of metabolic interactions between diverse microbial communities with organic and/or inorganic compounds present in environment. Some of the major metabolic processes involved in MICP at different levels are urea hydrolysis, denitrification, dissimilatory sulfate reduction and photosynthesis. Currently, MICP directed by urea hydrolysis, denitrification and dissimilatory sulfate reduction has been reported to aid in development of bioconcrete and demonstrated improvement in mechanical and structural properties of concrete. Bioconcrete is a promising sustainable technology in reducing the negative environmental impacts due to CO2 emission from construction sector and as well as in terms of economic benefits by way of promoting self-healing process of the concrete structures. Among the metabolic processes mentioned above, urea hydrolysis is the most applied in concrete repair mechanisms. MICP by urea hydrolysis is induced by a series of reactions driven by urease (Ur) and carbonic anhydrase (CA). Catalytic activity of these two enzymes depends on diverse parameters, which are currently being studied under laboratory conditions to understand the biochemical mechanisms involved and their regulation in microorganisms. It is clearly evident that microbiological and molecular components are essential to improve the process and performance of bioconcrete.read more
Citations
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Microbe-Mediated Extracellular and Intracellular Mineralization: Environmental, Industrial, and Biotechnological Applications
TL;DR: The different types of microbe‐mediated biomineralization that occur in nature, their mechanisms, as well as their applications are elucidated to create a backdrop for future research.
Journal ArticleDOI
The diversity of molecular mechanisms of carbonate biomineralization by bacteria
Sigrid Görgen,Karim Benzerara,Fériel Skouri-Panet,Muriel Gugger,Franck Chauvat,Corinne Cassier-Chauvat +5 more
TL;DR: A large number of cases illustrating the three different modes of bacterially-mediated CaCO3 mineralization are listed, which shows the broad diversity of metabolic pathways, organic molecules and thereby microorganisms that can biomineralize Ca CO3.
Journal ArticleDOI
Efficiency of microbially-induced calcite precipitation in natural clays for ground improvement
TL;DR: In this paper, the authors determined the suitable chemical condition to induce MICP activity from alkaliphilic urease-producing Sporosarcina pasteurii bacterium, and explored the MICP's effectiveness in improving the mechanical properties of three types of natural fine-grained soils.
Journal ArticleDOI
Revealing nutritional requirements of MICP-relevant Sporosarcina pasteurii DSM33 for growth improvement in chemically defined and complex media
TL;DR: In this paper, the growth of Sporosarcina pasteurii DSM 33 was boosted by detecting auxotrophic deficiencies (L-methionine, L-cysteine, thiamine, nicotinic acid), nutritional requirements (phosphate, trace elements) and useful carbon sources (glucose, maltose, lactose, fructose, sucrose, acetate, Lproline, l-alanine).
Journal ArticleDOI
MICP as a potential sustainable technique to treat or entrap contaminants in the natural environment: A review
TL;DR: In this paper, the authors reviewed the current and most significant discoveries and applications of MICP towards the conversion of heavy metals into heavy metal carbonates and removal of calcium from contaminated media such as polluted water.
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