AI Article Synopsis
- Cyanobacterial carbonate precipitation, influenced by cyanobacterial cells and extracellular polymeric substances (EPS), improves the durability of mortar used in construction.
- The study reveals that a higher attachment rate of cells and EPS to mortar correlates with better restoration effectiveness, and using UV-killed cells results in greater cell coverage compared to living ones.
- Analysis techniques like scanning electron microscopy and energy-dispersive X-ray spectroscopy indicate that cyanobacteria attach more readily to cement paste and utilize atmospheric CO to facilitate carbonate precipitation.
Article Abstract
Cyanobacterial carbonate precipitation induced by cells and extracellular polymeric substances (EPS) enhances mortar durability. The percentage of cell/EPS attachment regulates the effectiveness of the mortar restoration. This study investigates the cell coverage on mortar and microbially induced carbonate precipitation. Statistical analysis of results from scanning electron and fluorescence microscopy shows that the cell coverage was higher in the presence of UV-killed cells than living cells. Cells are preferably attached to cement paste than sand grains, with a difference of one order of magnitude. The energy-dispersive X-ray spectroscopy analyses and Raman mapping suggest cyanobacteria used atmospheric CO to precipitate carbonates.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8516036 | PMC |
| http://dx.doi.org/10.1002/mbo3.1243 | DOI Listing |
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