Attachment on mortar surfaces by cyanobacterium Gloeocapsa PCC 73106 and sequestration of CO2 by microbially induced calcium carbonate
Metadatos
Afficher la notice complèteEditorial
John Wiley & Sons
Materia
Cyanobacterium Gloe. PCC 73106 Extracellular polymeric substances Microbially induced carbonate precipitation Mortar durability
Date
2021-10-14Referencia bibliográfica
Zhu, T... [et al.] (2021). Attachment on mortar surfaces by cyanobacterium Gloeocapsa PCC 73106 and sequestration of CO2 by microbially induced calcium carbonate. MicrobiologyOpen, 10, e1243. [https://doi.org/10.1002/mbo3.1243]
Patrocinador
Ontario Research Fund of Ministry of Research and Innovation 24591; Natural Sciences and Engineering Research Council of Canada (NSERC) 354741; Canada Foundation for Innovation 24591Résumé
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 CO2 to precipitate carbonates.